We're dividing 45211900 by 639 
Our goal is to divide 45211900 by 639.

Moving on to step 1:
The number 639 fits into 4 0 times, leaving a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Grab the next digit (5) from the dividend, add it to 4, then carry on: 45 / 639

Step 2:
45 divided by 639 is 0 with a remainder of 45.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 45 leaves us with 45.
Include the next digit (2) from the dividend after 45, then repeat: 452 / 639

Let's proceed to step 3:
The number 639 fits into 452 0 times, leaving a remainder of 452.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 452 after subtracting 0 from 452.
Include the next digit (1) from the dividend after 452, then repeat: 4521 / 639

Going ahead to step 4:
639 goes into 4521 7 times with a remainder of 48.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Deduct 4473 from 4521 and we're left with 48.
Bring next digit (1) of the dividend behind the 48 and repeat the process: 481 / 639

Advancing to step 5:
481 divided by 639 is 0 with a remainder of 481.
The number 0 becomes the next digit in our result. 
Result so far: 70.0
Subtract 0 from 481 to get 481.
Grab the next digit (9) from the dividend, add it to 481, then carry on: 4819 / 639

Step 6:
4819 divided by 639 is 7 with a remainder of 346.
The next digit of our result is 7. 
Result so far: 707.0
If we subtract 4473 from 4819, we get 346.
Fetch the next digit (0) from the dividend, attach it to 346 and continue: 3460 / 639

On to step 7:
639 goes into 3460 5 times with a remainder of 265.
Record the quotient 5 as the next digit in the result. 
Result so far: 7075.0
Subtract 3195 from 3460 to get 265.
Grab the next digit (0) from the dividend, add it to 265, then carry on: 2650 / 639

On to step 8:
639 can be fit into 2650 4 times, resulting in a remainder of 94.
Use 4 as the next digit of our solution. 
Result so far: 70754.0
If we take 2556 away from 2650, we end up with 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

Step 9:
639 goes into 940 1 times with a remainder of 301.
Write down 1 as next digit of the result. 
Result so far: 70754.1
Deduct 639 from 940 and we're left with 301.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3010, and continue the process.

On to step 10:
639 goes into 3010 4 times with a remainder of 454.
Record the quotient 4 as the next digit in the result. 
Result so far: 70754.14
The remainder is 454 after subtracting 2556 from 3010.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4540, and continue the process.

Advancing to step 11:
If we divide 4540 by 639, we get 7 and a remainder of 67.
Record the quotient 7 as the next digit in the result. 
Result so far: 70754.147
Subtract 4473 from 4540 to get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Advancing to step 12:
If we divide 670 by 639, we get 1 and a remainder of 31.
Use 1 as the next digit of our solution. 
Result so far: 70754.1471
Deduct 639 from 670 and we're left with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Going ahead to step 13:
The number 639 fits into 310 0 times, leaving a remainder of 310.
Put 0 as the next digit of the answer. 
Result so far: 70754.1471
The remainder is 310 after subtracting 0 from 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Going ahead to step 14:
639 goes into 3100 4 times with a remainder of 544.
Write down 4 as next digit of the result. 
Result so far: 70754.147104
The remainder is 544 after subtracting 2556 from 3100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5440, and continue the process.

Step 15:
639 goes into 5440 8 times with a remainder of 328.
Put 8 as the next digit of the answer. 
Result so far: 70754.1471048
Subtract 5112 from 5440 to get 328.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

Going ahead to step 16:
639 can be fit into 3280 5 times, resulting in a remainder of 85.
Put 5 as the next digit of the answer. 
Result so far: 70754.14710485
If we subtract 3195 from 3280, we get 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

In conclusion, the division gives 70754.14710485 with a balance of 8.5e-08.