43170163 divided by 661 
We're looking to find how many times 661 goes into 43170163.

Going ahead to step 1:
4 divided by 661 is 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Fetch the next digit (3) from the dividend, attach it to 4 and continue: 43 / 661

Step 2:
661 goes into 43 0 times with a remainder of 43.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 43, we get 43.
Fetch the next digit (1) from the dividend, attach it to 43 and continue: 431 / 661

Advancing to step 3:
The number 661 fits into 431 0 times, leaving a remainder of 431.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 431 to get 431.
Fetch the next digit (7) from the dividend, attach it to 431 and continue: 4317 / 661

Advancing to step 4:
When dividing 4317 by 661, we get 6 with a remainder of 351.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Deduct 3966 from 4317 and we're left with 351.
Grab the next digit (0) from the dividend, add it to 351, then carry on: 3510 / 661

Let's proceed to step 5:
When dividing 3510 by 661, we get 5 with a remainder of 205.
Use 5 as the next digit of our solution. 
Result so far: 65.0
Deduct 3305 from 3510 and we're left with 205.
Bring next digit (1) of the dividend behind the 205 and repeat the process: 2051 / 661

Moving on to step 6:
661 can be fit into 2051 3 times, resulting in a remainder of 68.
The next digit of our result is 3. 
Result so far: 653.0
If we take 1983 away from 2051, we end up with 68.
Include the next digit (6) from the dividend after 68, then repeat: 686 / 661

On to step 7:
When dividing 686 by 661, we get 1 with a remainder of 25.
Record the quotient 1 as the next digit in the result. 
Result so far: 6531.0
If we subtract 661 from 686, we get 25.
Grab the next digit (3) from the dividend, add it to 25, then carry on: 253 / 661

On to step 8:
661 goes into 253 0 times with a remainder of 253.
Write down 0 as next digit of the result. 
Result so far: 65310.0
Subtract 0 from 253 to get 253.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2530, and continue the process.

Let's proceed to step 9:
2530 divided by 661 is 3 with a remainder of 547.
Put 3 as the next digit of the answer. 
Result so far: 65310.3
If we take 1983 away from 2530, we end up with 547.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5470, and continue the process.

On to step 10:
661 can be fit into 5470 8 times, resulting in a remainder of 182.
Use 8 as the next digit of our solution. 
Result so far: 65310.38
Subtract 5288 from 5470 to get 182.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1820, and continue the process.

Going ahead to step 11:
1820 divided by 661 is 2 with a remainder of 498.
Record the quotient 2 as the next digit in the result. 
Result so far: 65310.382
If we subtract 1322 from 1820, we get 498.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4980, and continue the process.

Let's proceed to step 12:
661 goes into 4980 7 times with a remainder of 353.
Write down 7 as next digit of the result. 
Result so far: 65310.3827
If we take 4627 away from 4980, we end up with 353.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3530, and continue the process.

Moving on to step 13:
661 can be fit into 3530 5 times, resulting in a remainder of 225.
The next digit of our result is 5. 
Result so far: 65310.38275
If we take 3305 away from 3530, we end up with 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

On to step 14:
661 goes into 2250 3 times with a remainder of 267.
Write down 3 as next digit of the result. 
Result so far: 65310.382753
If we take 1983 away from 2250, we end up with 267.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2670, and continue the process.

Let's proceed to step 15:
If we divide 2670 by 661, we get 4 and a remainder of 26.
The next digit of our result is 4. 
Result so far: 65310.3827534
Subtract 2644 from 2670 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 16:
If we divide 260 by 661, we get 0 and a remainder of 260.
Write down 0 as next digit of the result. 
Result so far: 65310.3827534
If we subtract 0 from 260, we get 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

After the division, we end up with 65310.3827534 and a remainder of 2.6e-07.