91026054 ÷ 863 
The aim is to understand the frequency of 863 in 91026054.

Step 1:
9 divided by 863 is 0 with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Grab the next digit (1) from the dividend, add it to 9, then carry on: 91 / 863

Going ahead to step 2:
863 goes into 91 0 times with a remainder of 91.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 91, we end up with 91.
Append the next digit (0) from the dividend to 91 and continue with: 910 / 863

Moving on to step 3:
The number 863 fits into 910 1 times, leaving a remainder of 47.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 863 from 910 and we're left with 47.
Take the next digit (2) from the dividend and append it to 47, then repeat: 472 / 863

Advancing to step 4:
When dividing 472 by 863, we get 0 with a remainder of 472.
Use 0 as the next digit of our solution. 
Result so far: 10.0
Deduct 0 from 472 and we're left with 472.
Take the next digit (6) from the dividend and append it to 472, then repeat: 4726 / 863

On to step 5:
The number 863 fits into 4726 5 times, leaving a remainder of 411.
The next digit of our result is 5. 
Result so far: 105.0
Deduct 4315 from 4726 and we're left with 411.
Fetch the next digit (0) from the dividend, attach it to 411 and continue: 4110 / 863

Let's proceed to step 6:
The number 863 fits into 4110 4 times, leaving a remainder of 658.
Put 4 as the next digit of the answer. 
Result so far: 1054.0
The remainder is 658 after subtracting 3452 from 4110.
Append the next digit (5) from the dividend to 658 and continue with: 6585 / 863

Let's proceed to step 7:
The number 863 fits into 6585 7 times, leaving a remainder of 544.
Record the quotient 7 as the next digit in the result. 
Result so far: 10547.0
Deduct 6041 from 6585 and we're left with 544.
Fetch the next digit (4) from the dividend, attach it to 544 and continue: 5444 / 863

Step 8:
863 goes into 5444 6 times with a remainder of 266.
Use 6 as the next digit of our solution. 
Result so far: 105476.0
Subtract 5178 from 5444 to 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.

On to step 9:
If we divide 2660 by 863, we get 3 and a remainder of 71.
The number 3 becomes the next digit in our result. 
Result so far: 105476.3
Deduct 2589 from 2660 and we're left with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Advancing to step 10:
710 divided by 863 is 0 with a remainder of 710.
Put 0 as the next digit of the answer. 
Result so far: 105476.3
If we subtract 0 from 710, we get 710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7100, and continue the process.

On to step 11:
When dividing 7100 by 863, we get 8 with a remainder of 196.
The number 8 becomes the next digit in our result. 
Result so far: 105476.308
Subtract 6904 from 7100 to get 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

On to step 12:
If we divide 1960 by 863, we get 2 and a remainder of 234.
Record the quotient 2 as the next digit in the result. 
Result so far: 105476.3082
If we take 1726 away from 1960, we end up with 234.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2340, and continue the process.

Let's proceed to step 13:
When dividing 2340 by 863, we get 2 with a remainder of 614.
Write down 2 as next digit of the result. 
Result so far: 105476.30822
Subtracting 1726 from 2340 leaves us with 614.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6140, and continue the process.

The final outcome is 105476.30822, with a leftover of 0.000614.