We divide 80231681 by 638
We want to figure out the number of times 80231681 can be divided by 638.

Advancing to step 1:
8 divided by 638 is 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (0) from the dividend after 8, then repeat: 80 / 638

Advancing to step 2:
80 divided by 638 is 0 with a remainder of 80.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 80 to get 80.
Bring next digit (2) of the dividend behind the 80 and repeat the process: 802 / 638

Going ahead to step 3:
638 goes into 802 1 times with a remainder of 164.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 164 after subtracting 638 from 802.
Bring next digit (3) of the dividend behind the 164 and repeat the process: 1643 / 638

Moving on to step 4:
638 goes into 1643 2 times with a remainder of 367.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
If we take 1276 away from 1643, we end up with 367.
Append the next digit (1) from the dividend to 367 and continue with: 3671 / 638

Let's proceed to step 5:
638 can be fit into 3671 5 times, resulting in a remainder of 481.
Put 5 as the next digit of the answer. 
Result so far: 125.0
Subtract 3190 from 3671 to get 481.
Bring next digit (6) of the dividend behind the 481 and repeat the process: 4816 / 638

Step 6:
4816 divided by 638 is 7 with a remainder of 350.
Use 7 as the next digit of our solution. 
Result so far: 1257.0
Subtract 4466 from 4816 to get 350.
Grab the next digit (8) from the dividend, add it to 350, then carry on: 3508 / 638

Let's proceed to step 7:
When dividing 3508 by 638, we get 5 with a remainder of 318.
The number 5 becomes the next digit in our result. 
Result so far: 12575.0
If we take 3190 away from 3508, we end up with 318.
Take the next digit (1) from the dividend and append it to 318, then repeat: 3181 / 638

Moving on to step 8:
3181 divided by 638 is 4 with a remainder of 629.
The number 4 becomes the next digit in our result. 
Result so far: 125754.0
Subtracting 2552 from 3181 leaves us with 629.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6290, and continue the process.

Advancing to step 9:
When dividing 6290 by 638, we get 9 with a remainder of 548.
Record the quotient 9 as the next digit in the result. 
Result so far: 125754.9
The remainder is 548 after subtracting 5742 from 6290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5480, and continue the process.

Moving on to step 10:
638 can be fit into 5480 8 times, resulting in a remainder of 376.
Use 8 as the next digit of our solution. 
Result so far: 125754.98
Deduct 5104 from 5480 and we're left with 376.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3760, and continue the process.

Let's proceed to step 11:
3760 divided by 638 is 5 with a remainder of 570.
Record the quotient 5 as the next digit in the result. 
Result so far: 125754.985
If we subtract 3190 from 3760, we get 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

Moving on to step 12:
If we divide 5700 by 638, we get 8 and a remainder of 596.
Put 8 as the next digit of the answer. 
Result so far: 125754.9858
Subtract 5104 from 5700 to get 596.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5960, and continue the process.

Moving on to step 13:
638 can be fit into 5960 9 times, resulting in a remainder of 218.
The next digit of our result is 9. 
Result so far: 125754.98589
Subtract 5742 from 5960 to get 218.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2180, and continue the process.

Advancing to step 14:
When dividing 2180 by 638, we get 3 with a remainder of 266.
Write down 3 as next digit of the result. 
Result so far: 125754.985893
If we subtract 1914 from 2180, we get 266.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2660, and continue the process.

Going ahead to step 15:
When dividing 2660 by 638, we get 4 with a remainder of 108.
Put 4 as the next digit of the answer. 
Result so far: 125754.9858934
Deduct 2552 from 2660 and we're left with 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

Advancing to step 16:
The number 638 fits into 1080 1 times, leaving a remainder of 442.
The next digit of our result is 1. 
Result so far: 125754.98589341
Deduct 638 from 1080 and we're left with 442.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4420, and continue the process.

After the division, we end up with 125754.98589341 and a remainder of 4.42e-07.