We're dividing 63424789 by 851 
We want to figure out the number of times 63424789 can be divided by 851.

Going ahead to step 1:
6 divided by 851 is 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Bring next digit (3) of the dividend behind the 6 and repeat the process: 63 / 851

On to step 2:
When dividing 63 by 851, we get 0 with a remainder of 63.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 63 after subtracting 0 from 63.
Grab the next digit (4) from the dividend, add it to 63, then carry on: 634 / 851

Step 3:
851 can be fit into 634 0 times, resulting in a remainder of 634.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 634, we end up with 634.
Bring next digit (2) of the dividend behind the 634 and repeat the process: 6342 / 851

On to step 4:
6342 divided by 851 is 7 with a remainder of 385.
The next digit of our result is 7. 
Result so far: 7.0
If we subtract 5957 from 6342, we get 385.
Bring next digit (4) of the dividend behind the 385 and repeat the process: 3854 / 851

Step 5:
If we divide 3854 by 851, we get 4 and a remainder of 450.
Record the quotient 4 as the next digit in the result. 
Result so far: 74.0
Deduct 3404 from 3854 and we're left with 450.
Append the next digit (7) from the dividend to 450 and continue with: 4507 / 851

Going ahead to step 6:
4507 divided by 851 is 5 with a remainder of 252.
Use 5 as the next digit of our solution. 
Result so far: 745.0
Subtracting 4255 from 4507 leaves us with 252.
Take the next digit (8) from the dividend and append it to 252, then repeat: 2528 / 851

Advancing to step 7:
The number 851 fits into 2528 2 times, leaving a remainder of 826.
Record the quotient 2 as the next digit in the result. 
Result so far: 7452.0
Subtracting 1702 from 2528 leaves us with 826.
Append the next digit (9) from the dividend to 826 and continue with: 8269 / 851

On to step 8:
The number 851 fits into 8269 9 times, leaving a remainder of 610.
Use 9 as the next digit of our solution. 
Result so far: 74529.0
If we subtract 7659 from 8269, we get 610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6100, and continue the process.

Moving on to step 9:
When dividing 6100 by 851, we get 7 with a remainder of 143.
Put 7 as the next digit of the answer. 
Result so far: 74529.7
Subtracting 5957 from 6100 leaves us with 143.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1430, and continue the process.

Advancing to step 10:
When dividing 1430 by 851, we get 1 with a remainder of 579.
Use 1 as the next digit of our solution. 
Result so far: 74529.71
Subtracting 851 from 1430 leaves us with 579.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5790, and continue the process.

Moving on to step 11:
851 goes into 5790 6 times with a remainder of 684.
The number 6 becomes the next digit in our result. 
Result so far: 74529.716
Deduct 5106 from 5790 and we're left with 684.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6840, and continue the process.

On to step 12:
The number 851 fits into 6840 8 times, leaving a remainder of 32.
Put 8 as the next digit of the answer. 
Result so far: 74529.7168
If we take 6808 away from 6840, 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.

Step 13:
851 can be fit into 320 0 times, resulting in a remainder of 320.
The next digit of our result is 0. 
Result so far: 74529.7168
If we subtract 0 from 320, we get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

On to step 14:
If we divide 3200 by 851, we get 3 and a remainder of 647.
Put 3 as the next digit of the answer. 
Result so far: 74529.716803
The remainder is 647 after subtracting 2553 from 3200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6470, and continue the process.

Let's proceed to step 15:
851 goes into 6470 7 times with a remainder of 513.
Use 7 as the next digit of our solution. 
Result so far: 74529.7168037
If we take 5957 away from 6470, we end up with 513.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5130, and continue the process.

Step 16:
851 can be fit into 5130 6 times, resulting in a remainder of 24.
The number 6 becomes the next digit in our result. 
Result so far: 74529.71680376
The remainder is 24 after subtracting 5106 from 5130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

After the division, we end up with 74529.71680376 and a remainder of 2.4e-08.