99203289 ÷ 639 
We're looking to find how many times 639 goes into 99203289.

Step 1:
When dividing 9 by 639, we get 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Take the next digit (9) from the dividend and append it to 9, then repeat: 99 / 639

Let's proceed to step 2:
If we divide 99 by 639, we get 0 and a remainder of 99.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 99 after subtracting 0 from 99.
Append the next digit (2) from the dividend to 99 and continue with: 992 / 639

Going ahead to step 3:
639 can be fit into 992 1 times, resulting in a remainder of 353.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 639 away from 992, we end up with 353.
Take the next digit (0) from the dividend and append it to 353, then repeat: 3530 / 639

Going ahead to step 4:
When dividing 3530 by 639, we get 5 with a remainder of 335.
Record the quotient 5 as the next digit in the result. 
Result so far: 15.0
Deduct 3195 from 3530 and we're left with 335.
Grab the next digit (3) from the dividend, add it to 335, then carry on: 3353 / 639

Moving on to step 5:
If we divide 3353 by 639, we get 5 and a remainder of 158.
Use 5 as the next digit of our solution. 
Result so far: 155.0
If we take 3195 away from 3353, we end up with 158.
Bring next digit (2) of the dividend behind the 158 and repeat the process: 1582 / 639

Step 6:
When dividing 1582 by 639, we get 2 with a remainder of 304.
Record the quotient 2 as the next digit in the result. 
Result so far: 1552.0
Subtracting 1278 from 1582 leaves us with 304.
Include the next digit (8) from the dividend after 304, then repeat: 3048 / 639

Going ahead to step 7:
If we divide 3048 by 639, we get 4 and a remainder of 492.
Write down 4 as next digit of the result. 
Result so far: 15524.0
If we take 2556 away from 3048, we end up with 492.
Append the next digit (9) from the dividend to 492 and continue with: 4929 / 639

Advancing to step 8:
If we divide 4929 by 639, we get 7 and a remainder of 456.
Put 7 as the next digit of the answer. 
Result so far: 155247.0
If we subtract 4473 from 4929, we get 456.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4560, and continue the process.

Moving on to step 9:
The number 639 fits into 4560 7 times, leaving a remainder of 87.
Put 7 as the next digit of the answer. 
Result so far: 155247.7
If we take 4473 away from 4560, we end up with 87.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

Step 10:
If we divide 870 by 639, we get 1 and a remainder of 231.
The next digit of our result is 1. 
Result so far: 155247.71
The remainder is 231 after subtracting 639 from 870.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2310, and continue the process.

Let's proceed to step 11:
639 goes into 2310 3 times with a remainder of 393.
The number 3 becomes the next digit in our result. 
Result so far: 155247.713
The remainder is 393 after subtracting 1917 from 2310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3930, and continue the process.

Going ahead to step 12:
If we divide 3930 by 639, we get 6 and a remainder of 96.
Record the quotient 6 as the next digit in the result. 
Result so far: 155247.7136
Subtracting 3834 from 3930 leaves us with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Moving on to step 13:
639 can be fit into 960 1 times, resulting in a remainder of 321.
The number 1 becomes the next digit in our result. 
Result so far: 155247.71361
Subtracting 639 from 960 leaves us with 321.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3210, and continue the process.

Let's proceed to step 14:
3210 divided by 639 is 5 with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 155247.713615
The remainder is 15 after subtracting 3195 from 3210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 15:
639 can be fit into 150 0 times, resulting in a remainder of 150.
Write down 0 as next digit of the result. 
Result so far: 155247.713615
If we take 0 away from 150, we end up with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Moving on to step 16:
If we divide 1500 by 639, we get 2 and a remainder of 222.
The number 2 becomes the next digit in our result. 
Result so far: 155247.71361502
The remainder is 222 after subtracting 1278 from 1500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2220, and continue the process.

After the division, we end up with 155247.71361502 and a remainder of 2.22e-07.