We look at the division of 86316010 by 921 
Let's see how many times 921 fits into 86316010.

Moving on to step 1:
When dividing 8 by 921, we get 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 921

On to step 2:
921 can be fit into 86 0 times, resulting in a remainder of 86.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 86 to get 86.
Bring next digit (3) of the dividend behind the 86 and repeat the process: 863 / 921

Moving on to step 3:
921 goes into 863 0 times with a remainder of 863.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 863 after subtracting 0 from 863.
Take the next digit (1) from the dividend and append it to 863, then repeat: 8631 / 921

Advancing to step 4:
921 goes into 8631 9 times with a remainder of 342.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
The remainder is 342 after subtracting 8289 from 8631.
Grab the next digit (6) from the dividend, add it to 342, then carry on: 3426 / 921

Going ahead to step 5:
If we divide 3426 by 921, we get 3 and a remainder of 663.
Put 3 as the next digit of the answer. 
Result so far: 93.0
Deduct 2763 from 3426 and we're left with 663.
Include the next digit (0) from the dividend after 663, then repeat: 6630 / 921

Let's proceed to step 6:
The number 921 fits into 6630 7 times, leaving a remainder of 183.
The number 7 becomes the next digit in our result. 
Result so far: 937.0
Subtracting 6447 from 6630 leaves us with 183.
Include the next digit (1) from the dividend after 183, then repeat: 1831 / 921

Let's proceed to step 7:
921 goes into 1831 1 times with a remainder of 910.
The number 1 becomes the next digit in our result. 
Result so far: 9371.0
If we take 921 away from 1831, we end up with 910.
Take the next digit (0) from the dividend and append it to 910, then repeat: 9100 / 921

Advancing to step 8:
921 can be fit into 9100 9 times, resulting in a remainder of 811.
Record the quotient 9 as the next digit in the result. 
Result so far: 93719.0
Subtract 8289 from 9100 to get 811.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8110, and continue the process.

On to step 9:
The number 921 fits into 8110 8 times, leaving a remainder of 742.
Record the quotient 8 as the next digit in the result. 
Result so far: 93719.8
Subtracting 7368 from 8110 leaves us with 742.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7420, and continue the process.

Let's proceed to step 10:
The number 921 fits into 7420 8 times, leaving a remainder of 52.
Put 8 as the next digit of the answer. 
Result so far: 93719.88
The remainder is 52 after subtracting 7368 from 7420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

After the division, we end up with 93719.88 and a remainder of 0.052.