Let's divide 84990325 by 639
Our goal is to divide 84990325 by 639.

Step 1:
639 can be fit into 8 0 times, resulting in a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Include the next digit (4) from the dividend after 8, then repeat: 84 / 639

Advancing to step 2:
If we divide 84 by 639, we get 0 and a remainder of 84.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 84 after subtracting 0 from 84.
Append the next digit (9) from the dividend to 84 and continue with: 849 / 639

Going ahead to step 3:
When dividing 849 by 639, we get 1 with a remainder of 210.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 639 from 849 leaves us with 210.
Fetch the next digit (9) from the dividend, attach it to 210 and continue: 2109 / 639

Going ahead to step 4:
2109 divided by 639 is 3 with a remainder of 192.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
Deduct 1917 from 2109 and we're left with 192.
Take the next digit (0) from the dividend and append it to 192, then repeat: 1920 / 639

On to step 5:
When dividing 1920 by 639, we get 3 with a remainder of 3.
Write down 3 as next digit of the result. 
Result so far: 133.0
Subtracting 1917 from 1920 leaves us with 3.
Bring next digit (3) of the dividend behind the 3 and repeat the process: 33 / 639

Advancing to step 6:
The number 639 fits into 33 0 times, leaving a remainder of 33.
Use 0 as the next digit of our solution. 
Result so far: 1330.0
Subtracting 0 from 33 leaves us with 33.
Include the next digit (2) from the dividend after 33, then repeat: 332 / 639

Step 7:
The number 639 fits into 332 0 times, leaving a remainder of 332.
Write down 0 as next digit of the result. 
Result so far: 13300.0
If we subtract 0 from 332, we get 332.
Take the next digit (5) from the dividend and append it to 332, then repeat: 3325 / 639

On to step 8:
The number 639 fits into 3325 5 times, leaving a remainder of 130.
The next digit of our result is 5. 
Result so far: 133005.0
Subtracting 3195 from 3325 leaves us with 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Moving on to step 9:
If we divide 1300 by 639, we get 2 and a remainder of 22.
Write down 2 as next digit of the result. 
Result so far: 133005.2
The remainder is 22 after subtracting 1278 from 1300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 10:
639 goes into 220 0 times with a remainder of 220.
Record the quotient 0 as the next digit in the result. 
Result so far: 133005.2
Deduct 0 from 220 and we're left with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Moving on to step 11:
639 can be fit into 2200 3 times, resulting in a remainder of 283.
Use 3 as the next digit of our solution. 
Result so far: 133005.203
If we take 1917 away from 2200, we end up with 283.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2830, and continue the process.

Advancing to step 12:
If we divide 2830 by 639, we get 4 and a remainder of 274.
Write down 4 as next digit of the result. 
Result so far: 133005.2034
If we take 2556 away from 2830, we end up with 274.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2740, and continue the process.

On to step 13:
If we divide 2740 by 639, we get 4 and a remainder of 184.
Use 4 as the next digit of our solution. 
Result so far: 133005.20344
The remainder is 184 after subtracting 2556 from 2740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

The final result is 133005.20344 with a remainder of 0.000184.