We divide 637857 by 80
We want to figure out the number of times 637857 can be divided by 80.

On to step 1:
6 divided by 80 is 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Append the next digit (3) from the dividend to 6 and continue with: 63 / 80

Step 2:
If we divide 63 by 80, we get 0 and a remainder of 63.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 63, we end up with 63.
Take the next digit (7) from the dividend and append it to 63, then repeat: 637 / 80

Advancing to step 3:
The number 80 fits into 637 7 times, leaving a remainder of 77.
The next digit of our result is 7. 
Result so far: 7.0
Subtracting 560 from 637 leaves us with 77.
Append the next digit (8) from the dividend to 77 and continue with: 778 / 80

On to step 4:
80 goes into 778 9 times with a remainder of 58.
The number 9 becomes the next digit in our result. 
Result so far: 79.0
Deduct 720 from 778 and we're left with 58.
Append the next digit (5) from the dividend to 58 and continue with: 585 / 80

Let's proceed to step 5:
585 divided by 80 is 7 with a remainder of 25.
Use 7 as the next digit of our solution. 
Result so far: 797.0
The remainder is 25 after subtracting 560 from 585.
Grab the next digit (7) from the dividend, add it to 25, then carry on: 257 / 80

Advancing to step 6:
If we divide 257 by 80, we get 3 and a remainder of 17.
The number 3 becomes the next digit in our result. 
Result so far: 7973.0
Deduct 240 from 257 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 7:
If we divide 170 by 80, we get 2 and a remainder of 10.
Put 2 as the next digit of the answer. 
Result so far: 7973.2
If we subtract 160 from 170, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 8:
The number 80 fits into 100 1 times, leaving a remainder of 20.
Put 1 as the next digit of the answer. 
Result so far: 7973.21
If we take 80 away from 100, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 9:
When dividing 200 by 80, we get 2 with a remainder of 40.
The next digit of our result is 2. 
Result so far: 7973.212
If we subtract 160 from 200, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 10:
When dividing 400 by 80, we get 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 7973.2125
Subtracting 400 from 400 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 11:
When dividing 0 by 80, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 7973.2125
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 12:
When dividing 0 by 80, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 7973.2125
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 7973.2125, with a leftover of 0.0.