We divide 66315398 by 81
We're looking to find how many times 81 goes into 66315398.

Going ahead to step 1:
81 can be fit into 6 0 times, resulting in a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 81

On to step 2:
If we divide 66 by 81, we get 0 and a remainder of 66.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 66, we end up with 66.
Append the next digit (3) from the dividend to 66 and continue with: 663 / 81

Moving on to step 3:
When dividing 663 by 81, we get 8 with a remainder of 15.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Subtracting 648 from 663 leaves us with 15.
Append the next digit (1) from the dividend to 15 and continue with: 151 / 81

Step 4:
81 can be fit into 151 1 times, resulting in a remainder of 70.
Write down 1 as next digit of the result. 
Result so far: 81.0
Subtracting 81 from 151 leaves us with 70.
Include the next digit (5) from the dividend after 70, then repeat: 705 / 81

Going ahead to step 5:
81 goes into 705 8 times with a remainder of 57.
Put 8 as the next digit of the answer. 
Result so far: 818.0
If we subtract 648 from 705, we get 57.
Fetch the next digit (3) from the dividend, attach it to 57 and continue: 573 / 81

Advancing to step 6:
The number 81 fits into 573 7 times, leaving a remainder of 6.
Put 7 as the next digit of the answer. 
Result so far: 8187.0
Deduct 567 from 573 and we're left with 6.
Fetch the next digit (9) from the dividend, attach it to 6 and continue: 69 / 81

Moving on to step 7:
81 goes into 69 0 times with a remainder of 69.
Write down 0 as next digit of the result. 
Result so far: 81870.0
The remainder is 69 after subtracting 0 from 69.
Grab the next digit (8) from the dividend, add it to 69, then carry on: 698 / 81

On to step 8:
698 divided by 81 is 8 with a remainder of 50.
Write down 8 as next digit of the result. 
Result so far: 818708.0
If we take 648 away from 698, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 9:
When dividing 500 by 81, we get 6 with a remainder of 14.
Put 6 as the next digit of the answer. 
Result so far: 818708.6
If we subtract 486 from 500, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 10:
When dividing 140 by 81, we get 1 with a remainder of 59.
Write down 1 as next digit of the result. 
Result so far: 818708.61
If we take 81 away from 140, we end up with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Going ahead to step 11:
The number 81 fits into 590 7 times, leaving a remainder of 23.
The number 7 becomes the next digit in our result. 
Result so far: 818708.617
If we take 567 away from 590, we end up with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

On to step 12:
When dividing 230 by 81, we get 2 with a remainder of 68.
Put 2 as the next digit of the answer. 
Result so far: 818708.6172
The remainder is 68 after subtracting 162 from 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Moving on to step 13:
When dividing 680 by 81, we get 8 with a remainder of 32.
Put 8 as the next digit of the answer. 
Result so far: 818708.61728
Subtracting 648 from 680 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 14:
If we divide 320 by 81, we get 3 and a remainder of 77.
Record the quotient 3 as the next digit in the result. 
Result so far: 818708.617283
Deduct 243 from 320 and we're left with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Going ahead to step 15:
If we divide 770 by 81, we get 9 and a remainder of 41.
The number 9 becomes the next digit in our result. 
Result so far: 818708.6172839
The remainder is 41 after subtracting 729 from 770.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Advancing to step 16:
410 divided by 81 is 5 with a remainder of 5.
The next digit of our result is 5. 
Result so far: 818708.61728395
Subtract 405 from 410 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The final result is 818708.61728395 with a remainder of 5e-09.