We look at the division of 7732121 by 637 
We want to figure out the number of times 7732121 can be divided by 637.

Step 1:
When dividing 7 by 637, we get 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Bring next digit (7) of the dividend behind the 7 and repeat the process: 77 / 637

Moving on to step 2:
If we divide 77 by 637, we get 0 and a remainder of 77.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 77, we get 77.
Include the next digit (3) from the dividend after 77, then repeat: 773 / 637

Moving on to step 3:
When dividing 773 by 637, we get 1 with a remainder of 136.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 637 from 773 to get 136.
Bring next digit (2) of the dividend behind the 136 and repeat the process: 1362 / 637

Advancing to step 4:
1362 divided by 637 is 2 with a remainder of 88.
Write down 2 as next digit of the result. 
Result so far: 12.0
Deduct 1274 from 1362 and we're left with 88.
Grab the next digit (1) from the dividend, add it to 88, then carry on: 881 / 637

Going ahead to step 5:
When dividing 881 by 637, we get 1 with a remainder of 244.
The next digit of our result is 1. 
Result so far: 121.0
If we subtract 637 from 881, we get 244.
Fetch the next digit (2) from the dividend, attach it to 244 and continue: 2442 / 637

On to step 6:
When dividing 2442 by 637, we get 3 with a remainder of 531.
Use 3 as the next digit of our solution. 
Result so far: 1213.0
The remainder is 531 after subtracting 1911 from 2442.
Append the next digit (1) from the dividend to 531 and continue with: 5311 / 637

Let's proceed to step 7:
637 goes into 5311 8 times with a remainder of 215.
Use 8 as the next digit of our solution. 
Result so far: 12138.0
If we subtract 5096 from 5311, we get 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

On to step 8:
637 goes into 2150 3 times with a remainder of 239.
The number 3 becomes the next digit in our result. 
Result so far: 12138.3
If we subtract 1911 from 2150, we get 239.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2390, and continue the process.

On to step 9:
637 goes into 2390 3 times with a remainder of 479.
The number 3 becomes the next digit in our result. 
Result so far: 12138.33
Subtract 1911 from 2390 to get 479.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4790, and continue the process.

Our division results in 12138.33 with a remaining 0.479.