43522107 divided by 660 
We want to figure out the number of times 43522107 can be divided by 660.

Step 1:
When dividing 4 by 660, we get 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 660

Step 2:
If we divide 43 by 660, we get 0 and a remainder of 43.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 43, we end up with 43.
Bring next digit (5) of the dividend behind the 43 and repeat the process: 435 / 660

Moving on to step 3:
660 goes into 435 0 times with a remainder of 435.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 435 and we're left with 435.
Include the next digit (2) from the dividend after 435, then repeat: 4352 / 660

Going ahead to step 4:
4352 divided by 660 is 6 with a remainder of 392.
Write down 6 as next digit of the result. 
Result so far: 6.0
If we subtract 3960 from 4352, we get 392.
Include the next digit (2) from the dividend after 392, then repeat: 3922 / 660

On to step 5:
The number 660 fits into 3922 5 times, leaving a remainder of 622.
Use 5 as the next digit of our solution. 
Result so far: 65.0
If we take 3300 away from 3922, we end up with 622.
Include the next digit (1) from the dividend after 622, then repeat: 6221 / 660

Advancing to step 6:
660 goes into 6221 9 times with a remainder of 281.
Use 9 as the next digit of our solution. 
Result so far: 659.0
Deduct 5940 from 6221 and we're left with 281.
Take the next digit (0) from the dividend and append it to 281, then repeat: 2810 / 660

Let's proceed to step 7:
When dividing 2810 by 660, we get 4 with a remainder of 170.
The number 4 becomes the next digit in our result. 
Result so far: 6594.0
If we take 2640 away from 2810, we end up with 170.
Bring next digit (7) of the dividend behind the 170 and repeat the process: 1707 / 660

Let's proceed to step 8:
When dividing 1707 by 660, we get 2 with a remainder of 387.
The number 2 becomes the next digit in our result. 
Result so far: 65942.0
The remainder is 387 after subtracting 1320 from 1707.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3870, and continue the process.

Advancing to step 9:
When dividing 3870 by 660, we get 5 with a remainder of 570.
The number 5 becomes the next digit in our result. 
Result so far: 65942.5
The remainder is 570 after subtracting 3300 from 3870.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

Moving on to step 10:
The number 660 fits into 5700 8 times, leaving a remainder of 420.
The number 8 becomes the next digit in our result. 
Result so far: 65942.58
Deduct 5280 from 5700 and we're left with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Going ahead to step 11:
660 goes into 4200 6 times with a remainder of 240.
The next digit of our result is 6. 
Result so far: 65942.586
If we take 3960 away from 4200, we end up with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Let's proceed to step 12:
When dividing 2400 by 660, we get 3 with a remainder of 420.
The number 3 becomes the next digit in our result. 
Result so far: 65942.5863
The remainder is 420 after subtracting 1980 from 2400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Advancing to step 13:
660 goes into 4200 6 times with a remainder of 240.
Record the quotient 6 as the next digit in the result. 
Result so far: 65942.58636
Subtract 3960 from 4200 to get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Moving on to step 14:
660 can be fit into 2400 3 times, resulting in a remainder of 420.
Write down 3 as next digit of the result. 
Result so far: 65942.586363
If we take 1980 away from 2400, we end up with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Let's proceed to step 15:
The number 660 fits into 4200 6 times, leaving a remainder of 240.
Record the quotient 6 as the next digit in the result. 
Result so far: 65942.5863636
If we take 3960 away from 4200, we end up with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Moving on to step 16:
If we divide 2400 by 660, we get 3 and a remainder of 420.
Use 3 as the next digit of our solution. 
Result so far: 65942.58636363
If we take 1980 away from 2400, we end up with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

In conclusion, the division gives 65942.58636363 with a balance of 4.2e-07.