161644 ÷ 43 
Let's see how many times 43 fits into 161644.

Advancing to step 1:
43 goes into 1 0 times with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 43

Moving on to step 2:
When dividing 16 by 43, we get 0 with a remainder of 16.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 16, we get 16.
Grab the next digit (1) from the dividend, add it to 16, then carry on: 161 / 43

On to step 3:
161 divided by 43 is 3 with a remainder of 32.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
The remainder is 32 after subtracting 129 from 161.
Bring next digit (6) of the dividend behind the 32 and repeat the process: 326 / 43

Let's proceed to step 4:
The number 43 fits into 326 7 times, leaving a remainder of 25.
The next digit of our result is 7. 
Result so far: 37.0
The remainder is 25 after subtracting 301 from 326.
Take the next digit (4) from the dividend and append it to 25, then repeat: 254 / 43

Step 5:
The number 43 fits into 254 5 times, leaving a remainder of 39.
Put 5 as the next digit of the answer. 
Result so far: 375.0
If we take 215 away from 254, we end up with 39.
Bring next digit (4) of the dividend behind the 39 and repeat the process: 394 / 43

Step 6:
The number 43 fits into 394 9 times, leaving a remainder of 7.
The number 9 becomes the next digit in our result. 
Result so far: 3759.0
If we take 387 away from 394, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 7:
The number 43 fits into 70 1 times, leaving a remainder of 27.
Use 1 as the next digit of our solution. 
Result so far: 3759.1
Subtract 43 from 70 to get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Let's proceed to step 8:
If we divide 270 by 43, we get 6 and a remainder of 12.
The next digit of our result is 6. 
Result so far: 3759.16
If we subtract 258 from 270, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 9:
When dividing 120 by 43, we get 2 with a remainder of 34.
Record the quotient 2 as the next digit in the result. 
Result so far: 3759.162
Deduct 86 from 120 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

On to step 10:
340 divided by 43 is 7 with a remainder of 39.
Put 7 as the next digit of the answer. 
Result so far: 3759.1627
If we subtract 301 from 340, we get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Going ahead to step 11:
When dividing 390 by 43, we get 9 with a remainder of 3.
Write down 9 as next digit of the result. 
Result so far: 3759.16279
Subtract 387 from 390 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 12:
When dividing 30 by 43, we get 0 with a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 3759.16279
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 13:
43 goes into 300 6 times with a remainder of 42.
The next digit of our result is 6. 
Result so far: 3759.1627906
If we take 258 away from 300, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 14:
The number 43 fits into 420 9 times, leaving a remainder of 33.
Record the quotient 9 as the next digit in the result. 
Result so far: 3759.16279069
If we subtract 387 from 420, we get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

The quotient of the division is 3759.16279069, and the remainder is 3.3e-08.