91154730 ÷ 649 
The aim is to understand the frequency of 649 in 91154730.

Moving on to step 1:
If we divide 9 by 649, we get 0 and a remainder of 9.
Write down 0 as next digit of the result. 
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 / 649

On to step 2:
When dividing 91 by 649, we get 0 with a remainder of 91.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 91, we end up with 91.
Fetch the next digit (1) from the dividend, attach it to 91 and continue: 911 / 649

Going ahead to step 3:
649 can be fit into 911 1 times, resulting in a remainder of 262.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 649 from 911 leaves us with 262.
Include the next digit (5) from the dividend after 262, then repeat: 2625 / 649

Let's proceed to step 4:
649 can be fit into 2625 4 times, resulting in a remainder of 29.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
If we subtract 2596 from 2625, we get 29.
Take the next digit (4) from the dividend and append it to 29, then repeat: 294 / 649

Advancing to step 5:
649 can be fit into 294 0 times, resulting in a remainder of 294.
Use 0 as the next digit of our solution. 
Result so far: 140.0
The remainder is 294 after subtracting 0 from 294.
Bring next digit (7) of the dividend behind the 294 and repeat the process: 2947 / 649

Moving on to step 6:
If we divide 2947 by 649, we get 4 and a remainder of 351.
Record the quotient 4 as the next digit in the result. 
Result so far: 1404.0
If we take 2596 away from 2947, we end up with 351.
Append the next digit (3) from the dividend to 351 and continue with: 3513 / 649

Advancing to step 7:
649 goes into 3513 5 times with a remainder of 268.
The next digit of our result is 5. 
Result so far: 14045.0
If we subtract 3245 from 3513, we get 268.
Take the next digit (0) from the dividend and append it to 268, then repeat: 2680 / 649

Moving on to step 8:
When dividing 2680 by 649, we get 4 with a remainder of 84.
Write down 4 as next digit of the result. 
Result so far: 140454.0
If we take 2596 away from 2680, we end up with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Let's proceed to step 9:
649 goes into 840 1 times with a remainder of 191.
The number 1 becomes the next digit in our result. 
Result so far: 140454.1
If we subtract 649 from 840, we get 191.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1910, and continue the process.

On to step 10:
649 can be fit into 1910 2 times, resulting in a remainder of 612.
Record the quotient 2 as the next digit in the result. 
Result so far: 140454.12
Subtract 1298 from 1910 to get 612.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6120, and continue the process.

Let's proceed to step 11:
When dividing 6120 by 649, we get 9 with a remainder of 279.
Record the quotient 9 as the next digit in the result. 
Result so far: 140454.129
The remainder is 279 after subtracting 5841 from 6120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2790, and continue the process.

Advancing to step 12:
The number 649 fits into 2790 4 times, leaving a remainder of 194.
Put 4 as the next digit of the answer. 
Result so far: 140454.1294
The remainder is 194 after subtracting 2596 from 2790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1940, and continue the process.

Moving on to step 13:
649 can be fit into 1940 2 times, resulting in a remainder of 642.
Record the quotient 2 as the next digit in the result. 
Result so far: 140454.12942
Deduct 1298 from 1940 and we're left with 642.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6420, and continue the process.

Advancing to step 14:
If we divide 6420 by 649, we get 9 and a remainder of 579.
The next digit of our result is 9. 
Result so far: 140454.129429
The remainder is 579 after subtracting 5841 from 6420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5790, and continue the process.

Advancing to step 15:
5790 divided by 649 is 8 with a remainder of 598.
The number 8 becomes the next digit in our result. 
Result so far: 140454.1294298
Subtract 5192 from 5790 to get 598.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5980, and continue the process.

Going ahead to step 16:
649 can be fit into 5980 9 times, resulting in a remainder of 139.
The next digit of our result is 9. 
Result so far: 140454.12942989
Subtracting 5841 from 5980 leaves us with 139.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1390, and continue the process.

The final result is 140454.12942989 with a remainder of 1.39e-07.