We divide 31521129 by 85
We want to divide 31521129 by 85.

Advancing to step 1:
85 goes into 3 0 times with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Append the next digit (1) from the dividend to 3 and continue with: 31 / 85

On to step 2:
31 divided by 85 is 0 with a remainder of 31.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 31 to get 31.
Take the next digit (5) from the dividend and append it to 31, then repeat: 315 / 85

Let's proceed to step 3:
The number 85 fits into 315 3 times, leaving a remainder of 60.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Deduct 255 from 315 and we're left with 60.
Include the next digit (2) from the dividend after 60, then repeat: 602 / 85

Advancing to step 4:
If we divide 602 by 85, we get 7 and a remainder of 7.
Write down 7 as next digit of the result. 
Result so far: 37.0
If we subtract 595 from 602, we get 7.
Include the next digit (1) from the dividend after 7, then repeat: 71 / 85

Let's proceed to step 5:
85 goes into 71 0 times with a remainder of 71.
The number 0 becomes the next digit in our result. 
Result so far: 370.0
Subtract 0 from 71 to get 71.
Take the next digit (1) from the dividend and append it to 71, then repeat: 711 / 85

Going ahead to step 6:
85 can be fit into 711 8 times, resulting in a remainder of 31.
Record the quotient 8 as the next digit in the result. 
Result so far: 3708.0
Subtracting 680 from 711 leaves us with 31.
Grab the next digit (2) from the dividend, add it to 31, then carry on: 312 / 85

Advancing to step 7:
The number 85 fits into 312 3 times, leaving a remainder of 57.
Write down 3 as next digit of the result. 
Result so far: 37083.0
Subtracting 255 from 312 leaves us with 57.
Include the next digit (9) from the dividend after 57, then repeat: 579 / 85

Moving on to step 8:
85 can be fit into 579 6 times, resulting in a remainder of 69.
The next digit of our result is 6. 
Result so far: 370836.0
Deduct 510 from 579 and we're left with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Going ahead to step 9:
85 can be fit into 690 8 times, resulting in a remainder of 10.
Record the quotient 8 as the next digit in the result. 
Result so far: 370836.8
If we take 680 away from 690, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 10:
When dividing 100 by 85, we get 1 with a remainder of 15.
Write down 1 as next digit of the result. 
Result so far: 370836.81
If we subtract 85 from 100, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 11:
85 goes into 150 1 times with a remainder of 65.
Record the quotient 1 as the next digit in the result. 
Result so far: 370836.811
Subtract 85 from 150 to get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

After the division, we end up with 370836.811 and a remainder of 0.0065.