We look at the division of 89316237 by 639 
We want to divide 89316237 by 639.

Going ahead to step 1:
639 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Append the next digit (9) from the dividend to 8 and continue with: 89 / 639

Step 2:
639 goes into 89 0 times with a remainder of 89.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 89 leaves us with 89.
Include the next digit (3) from the dividend after 89, then repeat: 893 / 639

Going ahead to step 3:
The number 639 fits into 893 1 times, leaving a remainder of 254.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 639 from 893 to get 254.
Append the next digit (1) from the dividend to 254 and continue with: 2541 / 639

Going ahead to step 4:
639 goes into 2541 3 times with a remainder of 624.
Put 3 as the next digit of the answer. 
Result so far: 13.0
Subtracting 1917 from 2541 leaves us with 624.
Bring next digit (6) of the dividend behind the 624 and repeat the process: 6246 / 639

Advancing to step 5:
The number 639 fits into 6246 9 times, leaving a remainder of 495.
Record the quotient 9 as the next digit in the result. 
Result so far: 139.0
Deduct 5751 from 6246 and we're left with 495.
Fetch the next digit (2) from the dividend, attach it to 495 and continue: 4952 / 639

Step 6:
4952 divided by 639 is 7 with a remainder of 479.
The number 7 becomes the next digit in our result. 
Result so far: 1397.0
Subtracting 4473 from 4952 leaves us with 479.
Take the next digit (3) from the dividend and append it to 479, then repeat: 4793 / 639

Going ahead to step 7:
If we divide 4793 by 639, we get 7 and a remainder of 320.
Use 7 as the next digit of our solution. 
Result so far: 13977.0
If we subtract 4473 from 4793, we get 320.
Fetch the next digit (7) from the dividend, attach it to 320 and continue: 3207 / 639

On to step 8:
639 can be fit into 3207 5 times, resulting in a remainder of 12.
Use 5 as the next digit of our solution. 
Result so far: 139775.0
Subtracting 3195 from 3207 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 9:
If we divide 120 by 639, we get 0 and a remainder of 120.
The next digit of our result is 0. 
Result so far: 139775.0
Deduct 0 from 120 and we're left with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

On to step 10:
639 goes into 1200 1 times with a remainder of 561.
Use 1 as the next digit of our solution. 
Result so far: 139775.01
Deduct 639 from 1200 and we're left with 561.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5610, and continue the process.

On to step 11:
639 goes into 5610 8 times with a remainder of 498.
The number 8 becomes the next digit in our result. 
Result so far: 139775.018
Subtract 5112 from 5610 to get 498.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4980, and continue the process.

On to step 12:
When dividing 4980 by 639, we get 7 with a remainder of 507.
The number 7 becomes the next digit in our result. 
Result so far: 139775.0187
Subtracting 4473 from 4980 leaves us with 507.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5070, and continue the process.

Let's proceed to step 13:
639 goes into 5070 7 times with a remainder of 597.
Use 7 as the next digit of our solution. 
Result so far: 139775.01877
Subtract 4473 from 5070 to get 597.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5970, and continue the process.

After the division, we end up with 139775.01877 and a remainder of 0.000597.