71450002 ÷ 639 
We're looking to find how many times 639 goes into 71450002.

Going ahead to step 1:
The number 639 fits into 7 0 times, leaving a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Fetch the next digit (1) from the dividend, attach it to 7 and continue: 71 / 639

On to step 2:
639 goes into 71 0 times with a remainder of 71.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 71 to get 71.
Take the next digit (4) from the dividend and append it to 71, then repeat: 714 / 639

On to step 3:
If we divide 714 by 639, we get 1 and a remainder of 75.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 639 from 714 leaves us with 75.
Append the next digit (5) from the dividend to 75 and continue with: 755 / 639

Step 4:
639 goes into 755 1 times with a remainder of 116.
The next digit of our result is 1. 
Result so far: 11.0
Subtracting 639 from 755 leaves us with 116.
Fetch the next digit (0) from the dividend, attach it to 116 and continue: 1160 / 639

Step 5:
If we divide 1160 by 639, we get 1 and a remainder of 521.
Record the quotient 1 as the next digit in the result. 
Result so far: 111.0
Subtracting 639 from 1160 leaves us with 521.
Append the next digit (0) from the dividend to 521 and continue with: 5210 / 639

Step 6:
If we divide 5210 by 639, we get 8 and a remainder of 98.
The next digit of our result is 8. 
Result so far: 1118.0
Subtracting 5112 from 5210 leaves us with 98.
Include the next digit (0) from the dividend after 98, then repeat: 980 / 639

Step 7:
639 goes into 980 1 times with a remainder of 341.
Put 1 as the next digit of the answer. 
Result so far: 11181.0
The remainder is 341 after subtracting 639 from 980.
Bring next digit (2) of the dividend behind the 341 and repeat the process: 3412 / 639

On to step 8:
3412 divided by 639 is 5 with a remainder of 217.
Use 5 as the next digit of our solution. 
Result so far: 111815.0
Deduct 3195 from 3412 and we're left with 217.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2170, and continue the process.

Let's proceed to step 9:
When dividing 2170 by 639, we get 3 with a remainder of 253.
Use 3 as the next digit of our solution. 
Result so far: 111815.3
Deduct 1917 from 2170 and we're left with 253.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2530, and continue the process.

Going ahead to step 10:
2530 divided by 639 is 3 with a remainder of 613.
The next digit of our result is 3. 
Result so far: 111815.33
If we subtract 1917 from 2530, we get 613.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6130, and continue the process.

Our division results in 111815.33 with a remaining 0.613.