87238980 ÷ 639 
Our goal is to divide 87238980 by 639.

Advancing to step 1:
When dividing 8 by 639, we get 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 639

Moving on to step 2:
The number 639 fits into 87 0 times, leaving a remainder of 87.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 87, we get 87.
Include the next digit (2) from the dividend after 87, then repeat: 872 / 639

On to step 3:
If we divide 872 by 639, we get 1 and a remainder of 233.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 639 from 872 and we're left with 233.
Append the next digit (3) from the dividend to 233 and continue with: 2333 / 639

Advancing to step 4:
The number 639 fits into 2333 3 times, leaving a remainder of 416.
The next digit of our result is 3. 
Result so far: 13.0
If we take 1917 away from 2333, we end up with 416.
Include the next digit (8) from the dividend after 416, then repeat: 4168 / 639

Let's proceed to step 5:
639 can be fit into 4168 6 times, resulting in a remainder of 334.
Record the quotient 6 as the next digit in the result. 
Result so far: 136.0
Subtracting 3834 from 4168 leaves us with 334.
Include the next digit (9) from the dividend after 334, then repeat: 3349 / 639

Step 6:
When dividing 3349 by 639, we get 5 with a remainder of 154.
The next digit of our result is 5. 
Result so far: 1365.0
Subtracting 3195 from 3349 leaves us with 154.
Grab the next digit (8) from the dividend, add it to 154, then carry on: 1548 / 639

Moving on to step 7:
If we divide 1548 by 639, we get 2 and a remainder of 270.
Write down 2 as next digit of the result. 
Result so far: 13652.0
The remainder is 270 after subtracting 1278 from 1548.
Bring next digit (0) of the dividend behind the 270 and repeat the process: 2700 / 639

On to step 8:
The number 639 fits into 2700 4 times, leaving a remainder of 144.
Write down 4 as next digit of the result. 
Result so far: 136524.0
The remainder is 144 after subtracting 2556 from 2700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

Going ahead to step 9:
639 can be fit into 1440 2 times, resulting in a remainder of 162.
Write down 2 as next digit of the result. 
Result so far: 136524.2
If we subtract 1278 from 1440, we get 162.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

Moving on to step 10:
1620 divided by 639 is 2 with a remainder of 342.
Record the quotient 2 as the next digit in the result. 
Result so far: 136524.22
If we subtract 1278 from 1620, we get 342.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3420, and continue the process.

In conclusion, the division gives 136524.22 with a balance of 0.342.