Let's divide 78521569 by 634
Let's see how many times 634 fits into 78521569.

Let's proceed to step 1:
634 goes into 7 0 times with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Fetch the next digit (8) from the dividend, attach it to 7 and continue: 78 / 634

Let's proceed to step 2:
78 divided by 634 is 0 with a remainder of 78.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 78, we get 78.
Fetch the next digit (5) from the dividend, attach it to 78 and continue: 785 / 634

Advancing to step 3:
If we divide 785 by 634, we get 1 and a remainder of 151.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 634 from 785 leaves us with 151.
Bring next digit (2) of the dividend behind the 151 and repeat the process: 1512 / 634

Step 4:
1512 divided by 634 is 2 with a remainder of 244.
Write down 2 as next digit of the result. 
Result so far: 12.0
Subtract 1268 from 1512 to get 244.
Bring next digit (1) of the dividend behind the 244 and repeat the process: 2441 / 634

Advancing to step 5:
634 goes into 2441 3 times with a remainder of 539.
Use 3 as the next digit of our solution. 
Result so far: 123.0
Subtract 1902 from 2441 to get 539.
Bring next digit (5) of the dividend behind the 539 and repeat the process: 5395 / 634

Moving on to step 6:
When dividing 5395 by 634, we get 8 with a remainder of 323.
The next digit of our result is 8. 
Result so far: 1238.0
Subtracting 5072 from 5395 leaves us with 323.
Fetch the next digit (6) from the dividend, attach it to 323 and continue: 3236 / 634

Moving on to step 7:
If we divide 3236 by 634, we get 5 and a remainder of 66.
Put 5 as the next digit of the answer. 
Result so far: 12385.0
If we subtract 3170 from 3236, we get 66.
Include the next digit (9) from the dividend after 66, then repeat: 669 / 634

Let's proceed to step 8:
When dividing 669 by 634, we get 1 with a remainder of 35.
The next digit of our result is 1. 
Result so far: 123851.0
Deduct 634 from 669 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Let's proceed to step 9:
The number 634 fits into 350 0 times, leaving a remainder of 350.
The next digit of our result is 0. 
Result so far: 123851.0
If we subtract 0 from 350, we get 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

On to step 10:
634 goes into 3500 5 times with a remainder of 330.
The number 5 becomes the next digit in our result. 
Result so far: 123851.05
Subtract 3170 from 3500 to get 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

Step 11:
634 can be fit into 3300 5 times, resulting in a remainder of 130.
The number 5 becomes the next digit in our result. 
Result so far: 123851.055
The remainder is 130 after subtracting 3170 from 3300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

After the division, we end up with 123851.055 and a remainder of 0.013.