We look at the division of 87693190 by 639 
We're looking to find how many times 639 goes into 87693190.

Advancing to step 1:
If we divide 8 by 639, we get 0 and a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 639

Going ahead to step 2:
639 goes into 87 0 times with a remainder of 87.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 87 after subtracting 0 from 87.
Grab the next digit (6) from the dividend, add it to 87, then carry on: 876 / 639

Step 3:
The number 639 fits into 876 1 times, leaving a remainder of 237.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 639 from 876, we get 237.
Fetch the next digit (9) from the dividend, attach it to 237 and continue: 2379 / 639

Going ahead to step 4:
If we divide 2379 by 639, we get 3 and a remainder of 462.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
If we subtract 1917 from 2379, we get 462.
Grab the next digit (3) from the dividend, add it to 462, then carry on: 4623 / 639

Going ahead to step 5:
639 goes into 4623 7 times with a remainder of 150.
Write down 7 as next digit of the result. 
Result so far: 137.0
Deduct 4473 from 4623 and we're left with 150.
Fetch the next digit (1) from the dividend, attach it to 150 and continue: 1501 / 639

On to step 6:
1501 divided by 639 is 2 with a remainder of 223.
Record the quotient 2 as the next digit in the result. 
Result so far: 1372.0
If we take 1278 away from 1501, we end up with 223.
Take the next digit (9) from the dividend and append it to 223, then repeat: 2239 / 639

Step 7:
When dividing 2239 by 639, we get 3 with a remainder of 322.
Use 3 as the next digit of our solution. 
Result so far: 13723.0
Subtract 1917 from 2239 to get 322.
Take the next digit (0) from the dividend and append it to 322, then repeat: 3220 / 639

Step 8:
639 goes into 3220 5 times with a remainder of 25.
Record the quotient 5 as the next digit in the result. 
Result so far: 137235.0
If we take 3195 away from 3220, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 9:
If we divide 250 by 639, we get 0 and a remainder of 250.
The next digit of our result is 0. 
Result so far: 137235.0
Deduct 0 from 250 and we're left with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Moving on to step 10:
2500 divided by 639 is 3 with a remainder of 583.
The next digit of our result is 3. 
Result so far: 137235.03
If we subtract 1917 from 2500, we get 583.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5830, and continue the process.

Moving on to step 11:
If we divide 5830 by 639, we get 9 and a remainder of 79.
The number 9 becomes the next digit in our result. 
Result so far: 137235.039
Subtracting 5751 from 5830 leaves us with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Moving on to step 12:
When dividing 790 by 639, we get 1 with a remainder of 151.
Put 1 as the next digit of the answer. 
Result so far: 137235.0391
Subtracting 639 from 790 leaves us with 151.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1510, and continue the process.

Going ahead to step 13:
If we divide 1510 by 639, we get 2 and a remainder of 232.
Write down 2 as next digit of the result. 
Result so far: 137235.03912
If we take 1278 away from 1510, we end up with 232.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2320, and continue the process.

Let's proceed to step 14:
If we divide 2320 by 639, we get 3 and a remainder of 403.
Use 3 as the next digit of our solution. 
Result so far: 137235.039123
Subtract 1917 from 2320 to get 403.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4030, and continue the process.

Step 15:
639 goes into 4030 6 times with a remainder of 196.
Write down 6 as next digit of the result. 
Result so far: 137235.0391236
Subtract 3834 from 4030 to get 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

Advancing to step 16:
639 goes into 1960 3 times with a remainder of 43.
The next digit of our result is 3. 
Result so far: 137235.03912363
Deduct 1917 from 1960 and we're left with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

The quotient of the division is 137235.03912363, and the remainder is 4.3e-08.