71638130 divided by 921 
We're looking to find how many times 921 goes into 71638130.

Step 1:
921 goes into 7 0 times with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Append the next digit (1) from the dividend to 7 and continue with: 71 / 921

Going ahead to step 2:
71 divided by 921 is 0 with a remainder of 71.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 71 leaves us with 71.
Take the next digit (6) from the dividend and append it to 71, then repeat: 716 / 921

On to step 3:
The number 921 fits into 716 0 times, leaving a remainder of 716.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 716 to get 716.
Include the next digit (3) from the dividend after 716, then repeat: 7163 / 921

Step 4:
921 can be fit into 7163 7 times, resulting in a remainder of 716.
Use 7 as the next digit of our solution. 
Result so far: 7.0
The remainder is 716 after subtracting 6447 from 7163.
Fetch the next digit (8) from the dividend, attach it to 716 and continue: 7168 / 921

Let's proceed to step 5:
7168 divided by 921 is 7 with a remainder of 721.
The number 7 becomes the next digit in our result. 
Result so far: 77.0
If we take 6447 away from 7168, we end up with 721.
Grab the next digit (1) from the dividend, add it to 721, then carry on: 7211 / 921

On to step 6:
7211 divided by 921 is 7 with a remainder of 764.
The number 7 becomes the next digit in our result. 
Result so far: 777.0
Subtracting 6447 from 7211 leaves us with 764.
Fetch the next digit (3) from the dividend, attach it to 764 and continue: 7643 / 921

Let's proceed to step 7:
When dividing 7643 by 921, we get 8 with a remainder of 275.
Use 8 as the next digit of our solution. 
Result so far: 7778.0
If we take 7368 away from 7643, we end up with 275.
Fetch the next digit (0) from the dividend, attach it to 275 and continue: 2750 / 921

On to step 8:
When dividing 2750 by 921, we get 2 with a remainder of 908.
Put 2 as the next digit of the answer. 
Result so far: 77782.0
Subtracting 1842 from 2750 leaves us with 908.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9080, and continue the process.

Let's proceed to step 9:
9080 divided by 921 is 9 with a remainder of 791.
Write down 9 as next digit of the result. 
Result so far: 77782.9
Subtract 8289 from 9080 to get 791.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7910, and continue the process.

Step 10:
The number 921 fits into 7910 8 times, leaving a remainder of 542.
Record the quotient 8 as the next digit in the result. 
Result so far: 77782.98
Subtracting 7368 from 7910 leaves us with 542.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5420, and continue the process.

Advancing to step 11:
921 goes into 5420 5 times with a remainder of 815.
Write down 5 as next digit of the result. 
Result so far: 77782.985
Deduct 4605 from 5420 and we're left with 815.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8150, and continue the process.

Let's proceed to step 12:
921 goes into 8150 8 times with a remainder of 782.
Record the quotient 8 as the next digit in the result. 
Result so far: 77782.9858
The remainder is 782 after subtracting 7368 from 8150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7820, and continue the process.

Step 13:
921 can be fit into 7820 8 times, resulting in a remainder of 452.
Write down 8 as next digit of the result. 
Result so far: 77782.98588
The remainder is 452 after subtracting 7368 from 7820.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4520, and continue the process.

The final result is 77782.98588 with a remainder of 0.000452.