83954070 divided by 815 
We want to divide 83954070 by 815.

Advancing to step 1:
The number 815 fits into 8 0 times, leaving a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Grab the next digit (3) from the dividend, add it to 8, then carry on: 83 / 815

On to step 2:
The number 815 fits into 83 0 times, leaving a remainder of 83.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 83, we end up with 83.
Grab the next digit (9) from the dividend, add it to 83, then carry on: 839 / 815

Moving on to step 3:
839 divided by 815 is 1 with a remainder of 24.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 815 from 839 and we're left with 24.
Take the next digit (5) from the dividend and append it to 24, then repeat: 245 / 815

Going ahead to step 4:
If we divide 245 by 815, we get 0 and a remainder of 245.
The next digit of our result is 0. 
Result so far: 10.0
Subtract 0 from 245 to get 245.
Bring next digit (4) of the dividend behind the 245 and repeat the process: 2454 / 815

Moving on to step 5:
815 can be fit into 2454 3 times, resulting in a remainder of 9.
Put 3 as the next digit of the answer. 
Result so far: 103.0
Subtracting 2445 from 2454 leaves us with 9.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 815

Going ahead to step 6:
When dividing 90 by 815, we get 0 with a remainder of 90.
The next digit of our result is 0. 
Result so far: 1030.0
If we take 0 away from 90, we end up with 90.
Fetch the next digit (7) from the dividend, attach it to 90 and continue: 907 / 815

Going ahead to step 7:
907 divided by 815 is 1 with a remainder of 92.
The next digit of our result is 1. 
Result so far: 10301.0
Subtract 815 from 907 to get 92.
Append the next digit (0) from the dividend to 92 and continue with: 920 / 815

Moving on to step 8:
815 can be fit into 920 1 times, resulting in a remainder of 105.
Record the quotient 1 as the next digit in the result. 
Result so far: 103011.0
If we subtract 815 from 920, we get 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

Going ahead to step 9:
The number 815 fits into 1050 1 times, leaving a remainder of 235.
Put 1 as the next digit of the answer. 
Result so far: 103011.1
Deduct 815 from 1050 and we're left with 235.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2350, and continue the process.

Moving on to step 10:
If we divide 2350 by 815, we get 2 and a remainder of 720.
Use 2 as the next digit of our solution. 
Result so far: 103011.12
Subtracting 1630 from 2350 leaves us with 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7200, and continue the process.

On to step 11:
815 can be fit into 7200 8 times, resulting in a remainder of 680.
Record the quotient 8 as the next digit in the result. 
Result so far: 103011.128
Subtract 6520 from 7200 to get 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6800, and continue the process.

Going ahead to step 12:
815 goes into 6800 8 times with a remainder of 280.
The next digit of our result is 8. 
Result so far: 103011.1288
If we subtract 6520 from 6800, we get 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

After the division, we end up with 103011.1288 and a remainder of 0.0028.