31591672 ÷ 638 
Let's see how many times 638 fits into 31591672.

Advancing to step 1:
638 goes into 3 0 times with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Take the next digit (1) from the dividend and append it to 3, then repeat: 31 / 638

Advancing to step 2:
The number 638 fits into 31 0 times, leaving a remainder of 31.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 31, we end up with 31.
Include the next digit (5) from the dividend after 31, then repeat: 315 / 638

Let's proceed to step 3:
If we divide 315 by 638, we get 0 and a remainder of 315.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 315 leaves us with 315.
Append the next digit (9) from the dividend to 315 and continue with: 3159 / 638

Step 4:
If we divide 3159 by 638, we get 4 and a remainder of 607.
The next digit of our result is 4. 
Result so far: 4.0
Subtract 2552 from 3159 to get 607.
Append the next digit (1) from the dividend to 607 and continue with: 6071 / 638

Going ahead to step 5:
638 goes into 6071 9 times with a remainder of 329.
The next digit of our result is 9. 
Result so far: 49.0
Deduct 5742 from 6071 and we're left with 329.
Append the next digit (6) from the dividend to 329 and continue with: 3296 / 638

Step 6:
When dividing 3296 by 638, we get 5 with a remainder of 106.
Write down 5 as next digit of the result. 
Result so far: 495.0
Subtract 3190 from 3296 to get 106.
Fetch the next digit (7) from the dividend, attach it to 106 and continue: 1067 / 638

On to step 7:
If we divide 1067 by 638, we get 1 and a remainder of 429.
Put 1 as the next digit of the answer. 
Result so far: 4951.0
Subtracting 638 from 1067 leaves us with 429.
Grab the next digit (2) from the dividend, add it to 429, then carry on: 4292 / 638

Step 8:
If we divide 4292 by 638, we get 6 and a remainder of 464.
The next digit of our result is 6. 
Result so far: 49516.0
Subtract 3828 from 4292 to get 464.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4640, and continue the process.

Advancing to step 9:
When dividing 4640 by 638, we get 7 with a remainder of 174.
Use 7 as the next digit of our solution. 
Result so far: 49516.7
Subtracting 4466 from 4640 leaves us with 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Moving on to step 10:
638 can be fit into 1740 2 times, resulting in a remainder of 464.
Record the quotient 2 as the next digit in the result. 
Result so far: 49516.72
The remainder is 464 after subtracting 1276 from 1740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4640, and continue the process.

Advancing to step 11:
If we divide 4640 by 638, we get 7 and a remainder of 174.
The number 7 becomes the next digit in our result. 
Result so far: 49516.727
If we take 4466 away from 4640, we end up with 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Step 12:
When dividing 1740 by 638, we get 2 with a remainder of 464.
Use 2 as the next digit of our solution. 
Result so far: 49516.7272
Subtract 1276 from 1740 to get 464.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4640, and continue the process.

On to step 13:
638 goes into 4640 7 times with a remainder of 174.
The next digit of our result is 7. 
Result so far: 49516.72727
The remainder is 174 after subtracting 4466 from 4640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

On to step 14:
The number 638 fits into 1740 2 times, leaving a remainder of 464.
Use 2 as the next digit of our solution. 
Result so far: 49516.727272
Subtracting 1276 from 1740 leaves us with 464.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4640, and continue the process.

Step 15:
The number 638 fits into 4640 7 times, leaving a remainder of 174.
Put 7 as the next digit of the answer. 
Result so far: 49516.7272727
The remainder is 174 after subtracting 4466 from 4640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Step 16:
When dividing 1740 by 638, we get 2 with a remainder of 464.
Put 2 as the next digit of the answer. 
Result so far: 49516.72727272
If we subtract 1276 from 1740, we get 464.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4640, and continue the process.

The final result is 49516.72727272 with a remainder of 4.64e-07.