We're dividing 89638973 by 521 
Let's see how many times 521 fits into 89638973.

On to step 1:
8 divided by 521 is 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Include the next digit (9) from the dividend after 8, then repeat: 89 / 521

Let's proceed to step 2:
The number 521 fits into 89 0 times, leaving a remainder of 89.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 89, we get 89.
Grab the next digit (6) from the dividend, add it to 89, then carry on: 896 / 521

Step 3:
521 goes into 896 1 times with a remainder of 375.
The next digit of our result is 1. 
Result so far: 1.0
If we take 521 away from 896, we end up with 375.
Grab the next digit (3) from the dividend, add it to 375, then carry on: 3753 / 521

Step 4:
521 can be fit into 3753 7 times, resulting in a remainder of 106.
Put 7 as the next digit of the answer. 
Result so far: 17.0
Deduct 3647 from 3753 and we're left with 106.
Fetch the next digit (8) from the dividend, attach it to 106 and continue: 1068 / 521

Going ahead to step 5:
If we divide 1068 by 521, we get 2 and a remainder of 26.
The number 2 becomes the next digit in our result. 
Result so far: 172.0
Subtracting 1042 from 1068 leaves us with 26.
Bring next digit (9) of the dividend behind the 26 and repeat the process: 269 / 521

Step 6:
When dividing 269 by 521, we get 0 with a remainder of 269.
Put 0 as the next digit of the answer. 
Result so far: 1720.0
Subtracting 0 from 269 leaves us with 269.
Grab the next digit (7) from the dividend, add it to 269, then carry on: 2697 / 521

On to step 7:
2697 divided by 521 is 5 with a remainder of 92.
Write down 5 as next digit of the result. 
Result so far: 17205.0
If we take 2605 away from 2697, we end up with 92.
Grab the next digit (3) from the dividend, add it to 92, then carry on: 923 / 521

Step 8:
The number 521 fits into 923 1 times, leaving a remainder of 402.
Put 1 as the next digit of the answer. 
Result so far: 172051.0
If we take 521 away from 923, we end up with 402.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4020, and continue the process.

Step 9:
When dividing 4020 by 521, we get 7 with a remainder of 373.
The next digit of our result is 7. 
Result so far: 172051.7
If we take 3647 away from 4020, we end up with 373.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3730, and continue the process.

Going ahead to step 10:
521 can be fit into 3730 7 times, resulting in a remainder of 83.
Put 7 as the next digit of the answer. 
Result so far: 172051.77
Deduct 3647 from 3730 and we're left with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

The quotient of the division is 172051.77, and the remainder is 0.083.