81389887 ÷ 79 
We want to figure out the number of times 81389887 can be divided by 79.

Going ahead to step 1:
The number 79 fits into 8 0 times, leaving a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 79

Going ahead to step 2:
79 goes into 81 1 times with a remainder of 2.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 79 away from 81, we end up with 2.
Include the next digit (3) from the dividend after 2, then repeat: 23 / 79

On to step 3:
79 can be fit into 23 0 times, resulting in a remainder of 23.
Put 0 as the next digit of the answer. 
Result so far: 10.0
Subtract 0 from 23 to get 23.
Bring next digit (8) of the dividend behind the 23 and repeat the process: 238 / 79

Step 4:
The number 79 fits into 238 3 times, leaving a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 103.0
The remainder is 1 after subtracting 237 from 238.
Bring next digit (9) of the dividend behind the 1 and repeat the process: 19 / 79

Let's proceed to step 5:
19 divided by 79 is 0 with a remainder of 19.
Write down 0 as next digit of the result. 
Result so far: 1030.0
Subtract 0 from 19 to get 19.
Take the next digit (8) from the dividend and append it to 19, then repeat: 198 / 79

Let's proceed to step 6:
The number 79 fits into 198 2 times, leaving a remainder of 40.
The next digit of our result is 2. 
Result so far: 10302.0
The remainder is 40 after subtracting 158 from 198.
Include the next digit (8) from the dividend after 40, then repeat: 408 / 79

Let's proceed to step 7:
408 divided by 79 is 5 with a remainder of 13.
Put 5 as the next digit of the answer. 
Result so far: 103025.0
Subtracting 395 from 408 leaves us with 13.
Bring next digit (7) of the dividend behind the 13 and repeat the process: 137 / 79

Step 8:
137 divided by 79 is 1 with a remainder of 58.
The number 1 becomes the next digit in our result. 
Result so far: 1030251.0
If we subtract 79 from 137, we get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Going ahead to step 9:
79 goes into 580 7 times with a remainder of 27.
Put 7 as the next digit of the answer. 
Result so far: 1030251.7
The remainder is 27 after subtracting 553 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

On to step 10:
79 can be fit into 270 3 times, resulting in a remainder of 33.
Record the quotient 3 as the next digit in the result. 
Result so far: 1030251.73
The remainder is 33 after subtracting 237 from 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Going ahead to step 11:
If we divide 330 by 79, we get 4 and a remainder of 14.
Write down 4 as next digit of the result. 
Result so far: 1030251.734
If we take 316 away from 330, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 12:
When dividing 140 by 79, we get 1 with a remainder of 61.
Use 1 as the next digit of our solution. 
Result so far: 1030251.7341
If we subtract 79 from 140, we get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

On to step 13:
610 divided by 79 is 7 with a remainder of 57.
Write down 7 as next digit of the result. 
Result so far: 1030251.73417
The remainder is 57 after subtracting 553 from 610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Let's proceed to step 14:
If we divide 570 by 79, we get 7 and a remainder of 17.
Record the quotient 7 as the next digit in the result. 
Result so far: 1030251.734177
If we take 553 away from 570, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

The quotient of the division is 1030251.734177, and the remainder is 1.7e-06.