We look at the division of 83400512 by 647 
We want to figure out the number of times 83400512 can be divided by 647.

On to step 1:
If we divide 8 by 647, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (3) from the dividend, add it to 8, then carry on: 83 / 647

Moving on to step 2:
If we divide 83 by 647, we get 0 and a remainder of 83.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 83 after subtracting 0 from 83.
Grab the next digit (4) from the dividend, add it to 83, then carry on: 834 / 647

Step 3:
647 goes into 834 1 times with a remainder of 187.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 187 after subtracting 647 from 834.
Grab the next digit (0) from the dividend, add it to 187, then carry on: 1870 / 647

Advancing to step 4:
647 can be fit into 1870 2 times, resulting in a remainder of 576.
Write down 2 as next digit of the result. 
Result so far: 12.0
The remainder is 576 after subtracting 1294 from 1870.
Append the next digit (0) from the dividend to 576 and continue with: 5760 / 647

Let's proceed to step 5:
647 can be fit into 5760 8 times, resulting in a remainder of 584.
The next digit of our result is 8. 
Result so far: 128.0
Deduct 5176 from 5760 and we're left with 584.
Fetch the next digit (5) from the dividend, attach it to 584 and continue: 5845 / 647

Step 6:
5845 divided by 647 is 9 with a remainder of 22.
Write down 9 as next digit of the result. 
Result so far: 1289.0
Deduct 5823 from 5845 and we're left with 22.
Include the next digit (1) from the dividend after 22, then repeat: 221 / 647

Step 7:
647 goes into 221 0 times with a remainder of 221.
The number 0 becomes the next digit in our result. 
Result so far: 12890.0
The remainder is 221 after subtracting 0 from 221.
Include the next digit (2) from the dividend after 221, then repeat: 2212 / 647

Moving on to step 8:
The number 647 fits into 2212 3 times, leaving a remainder of 271.
Write down 3 as next digit of the result. 
Result so far: 128903.0
Subtracting 1941 from 2212 leaves us with 271.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2710, and continue the process.

Let's proceed to step 9:
2710 divided by 647 is 4 with a remainder of 122.
Put 4 as the next digit of the answer. 
Result so far: 128903.4
The remainder is 122 after subtracting 2588 from 2710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

Moving on to step 10:
If we divide 1220 by 647, we get 1 and a remainder of 573.
Use 1 as the next digit of our solution. 
Result so far: 128903.41
Subtracting 647 from 1220 leaves us with 573.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5730, and continue the process.

On to step 11:
If we divide 5730 by 647, we get 8 and a remainder of 554.
Write down 8 as next digit of the result. 
Result so far: 128903.418
The remainder is 554 after subtracting 5176 from 5730.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5540, and continue the process.

On to step 12:
647 goes into 5540 8 times with a remainder of 364.
The number 8 becomes the next digit in our result. 
Result so far: 128903.4188
The remainder is 364 after subtracting 5176 from 5540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3640, and continue the process.

The quotient of the division is 128903.4188, and the remainder is 0.00364.