We divide 491351 by 81
The aim is to understand the frequency of 81 in 491351.

Step 1:
The number 81 fits into 4 0 times, leaving a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Grab the next digit (9) from the dividend, add it to 4, then carry on: 49 / 81

Going ahead to step 2:
When dividing 49 by 81, we get 0 with a remainder of 49.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 49 and we're left with 49.
Grab the next digit (1) from the dividend, add it to 49, then carry on: 491 / 81

On to step 3:
491 divided by 81 is 6 with a remainder of 5.
Put 6 as the next digit of the answer. 
Result so far: 6.0
If we take 486 away from 491, we end up with 5.
Append the next digit (3) from the dividend to 5 and continue with: 53 / 81

Moving on to step 4:
53 divided by 81 is 0 with a remainder of 53.
Put 0 as the next digit of the answer. 
Result so far: 60.0
The remainder is 53 after subtracting 0 from 53.
Fetch the next digit (5) from the dividend, attach it to 53 and continue: 535 / 81

Advancing to step 5:
81 goes into 535 6 times with a remainder of 49.
Write down 6 as next digit of the result. 
Result so far: 606.0
Subtract 486 from 535 to get 49.
Take the next digit (1) from the dividend and append it to 49, then repeat: 491 / 81

Let's proceed to step 6:
When dividing 491 by 81, we get 6 with a remainder of 5.
Write down 6 as next digit of the result. 
Result so far: 6066.0
Subtract 486 from 491 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.

Step 7:
If we divide 50 by 81, we get 0 and a remainder of 50.
The next digit of our result is 0. 
Result so far: 6066.0
Subtract 0 from 50 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 8:
When dividing 500 by 81, we get 6 with a remainder of 14.
Record the quotient 6 as the next digit in the result. 
Result so far: 6066.06
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 9:
81 can be fit into 140 1 times, resulting in a remainder of 59.
Use 1 as the next digit of our solution. 
Result so far: 6066.061
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.

Let's proceed to step 10:
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: 6066.0617
The remainder is 23 after subtracting 567 from 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Moving on to step 11:
230 divided by 81 is 2 with a remainder of 68.
Put 2 as the next digit of the answer. 
Result so far: 6066.06172
Subtract 162 from 230 to get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Advancing to step 12:
When dividing 680 by 81, we get 8 with a remainder of 32.
Record the quotient 8 as the next digit in the result. 
Result so far: 6066.061728
Deduct 648 from 680 and we're left 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.

Step 13:
320 divided by 81 is 3 with a remainder of 77.
Write down 3 as next digit of the result. 
Result so far: 6066.0617283
The remainder is 77 after subtracting 243 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Let's proceed to step 14:
When dividing 770 by 81, we get 9 with a remainder of 41.
The number 9 becomes the next digit in our result. 
Result so far: 6066.06172839
If we subtract 729 from 770, we get 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

The quotient of the division is 6066.06172839, and the remainder is 4.1e-08.