We look at the division of 39157650 by 921 
We want to figure out the number of times 39157650 can be divided by 921.

Let's proceed to step 1:
921 can be fit into 3 0 times, resulting in a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 921

On to step 2:
39 divided by 921 is 0 with a remainder of 39.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 39 to get 39.
Append the next digit (1) from the dividend to 39 and continue with: 391 / 921

Let's proceed to step 3:
The number 921 fits into 391 0 times, leaving a remainder of 391.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 391, we end up with 391.
Bring next digit (5) of the dividend behind the 391 and repeat the process: 3915 / 921

Let's proceed to step 4:
The number 921 fits into 3915 4 times, leaving a remainder of 231.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we take 3684 away from 3915, we end up with 231.
Bring next digit (7) of the dividend behind the 231 and repeat the process: 2317 / 921

Advancing to step 5:
When dividing 2317 by 921, we get 2 with a remainder of 475.
The number 2 becomes the next digit in our result. 
Result so far: 42.0
If we subtract 1842 from 2317, we get 475.
Append the next digit (6) from the dividend to 475 and continue with: 4756 / 921

Going ahead to step 6:
The number 921 fits into 4756 5 times, leaving a remainder of 151.
The number 5 becomes the next digit in our result. 
Result so far: 425.0
The remainder is 151 after subtracting 4605 from 4756.
Append the next digit (5) from the dividend to 151 and continue with: 1515 / 921

Step 7:
The number 921 fits into 1515 1 times, leaving a remainder of 594.
The next digit of our result is 1. 
Result so far: 4251.0
If we subtract 921 from 1515, we get 594.
Include the next digit (0) from the dividend after 594, then repeat: 5940 / 921

Moving on to step 8:
The number 921 fits into 5940 6 times, leaving a remainder of 414.
The number 6 becomes the next digit in our result. 
Result so far: 42516.0
Subtract 5526 from 5940 to get 414.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4140, and continue the process.

Moving on to step 9:
921 goes into 4140 4 times with a remainder of 456.
The next digit of our result is 4. 
Result so far: 42516.4
The remainder is 456 after subtracting 3684 from 4140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4560, and continue the process.

Let's proceed to step 10:
4560 divided by 921 is 4 with a remainder of 876.
Write down 4 as next digit of the result. 
Result so far: 42516.44
Deduct 3684 from 4560 and we're left with 876.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8760, and continue the process.

The final result is 42516.44 with a remainder of 0.876.