169631 ÷ 86 
We want to divide 169631 by 86.

Going ahead to step 1:
86 goes into 1 0 times with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 86

Moving on to step 2:
When dividing 16 by 86, we get 0 with a remainder of 16.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 16, we end up with 16.
Grab the next digit (9) from the dividend, add it to 16, then carry on: 169 / 86

Going ahead to step 3:
169 divided by 86 is 1 with a remainder of 83.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 86 from 169 to get 83.
Bring next digit (6) of the dividend behind the 83 and repeat the process: 836 / 86

Step 4:
If we divide 836 by 86, we get 9 and a remainder of 62.
The next digit of our result is 9. 
Result so far: 19.0
Deduct 774 from 836 and we're left with 62.
Fetch the next digit (3) from the dividend, attach it to 62 and continue: 623 / 86

On to step 5:
The number 86 fits into 623 7 times, leaving a remainder of 21.
Record the quotient 7 as the next digit in the result. 
Result so far: 197.0
If we take 602 away from 623, we end up with 21.
Take the next digit (1) from the dividend and append it to 21, then repeat: 211 / 86

On to step 6:
86 goes into 211 2 times with a remainder of 39.
Write down 2 as next digit of the result. 
Result so far: 1972.0
If we subtract 172 from 211, 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.

Moving on to step 7:
If we divide 390 by 86, we get 4 and a remainder of 46.
Use 4 as the next digit of our solution. 
Result so far: 1972.4
If we subtract 344 from 390, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Going ahead to step 8:
The number 86 fits into 460 5 times, leaving a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 1972.45
If we take 430 away from 460, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 9:
300 divided by 86 is 3 with a remainder of 42.
Use 3 as the next digit of our solution. 
Result so far: 1972.453
If we subtract 258 from 300, we get 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 10:
420 divided by 86 is 4 with a remainder of 76.
The next digit of our result is 4. 
Result so far: 1972.4534
Deduct 344 from 420 and we're left with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Step 11:
760 divided by 86 is 8 with a remainder of 72.
Use 8 as the next digit of our solution. 
Result so far: 1972.45348
Subtracting 688 from 760 leaves us with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

On to step 12:
The number 86 fits into 720 8 times, leaving a remainder of 32.
Use 8 as the next digit of our solution. 
Result so far: 1972.453488
If we take 688 away from 720, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

The final outcome is 1972.453488, with a leftover of 3.2e-06.