We look at the division of 91400996 by 358 
The aim is to understand the frequency of 358 in 91400996.

Advancing to step 1:
9 divided by 358 is 0 with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Fetch the next digit (1) from the dividend, attach it to 9 and continue: 91 / 358

Moving on to step 2:
358 can be fit into 91 0 times, resulting in a remainder of 91.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 91 after subtracting 0 from 91.
Bring next digit (4) of the dividend behind the 91 and repeat the process: 914 / 358

Moving on to step 3:
When dividing 914 by 358, we get 2 with a remainder of 198.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Deduct 716 from 914 and we're left with 198.
Bring next digit (0) of the dividend behind the 198 and repeat the process: 1980 / 358

On to step 4:
358 can be fit into 1980 5 times, resulting in a remainder of 190.
Use 5 as the next digit of our solution. 
Result so far: 25.0
Deduct 1790 from 1980 and we're left with 190.
Include the next digit (0) from the dividend after 190, then repeat: 1900 / 358

Advancing to step 5:
The number 358 fits into 1900 5 times, leaving a remainder of 110.
Put 5 as the next digit of the answer. 
Result so far: 255.0
Subtracting 1790 from 1900 leaves us with 110.
Bring next digit (9) of the dividend behind the 110 and repeat the process: 1109 / 358

Going ahead to step 6:
If we divide 1109 by 358, we get 3 and a remainder of 35.
Record the quotient 3 as the next digit in the result. 
Result so far: 2553.0
Subtracting 1074 from 1109 leaves us with 35.
Fetch the next digit (9) from the dividend, attach it to 35 and continue: 359 / 358

Let's proceed to step 7:
When dividing 359 by 358, we get 1 with a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 25531.0
Subtract 358 from 359 to get 1.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 358

Advancing to step 8:
16 divided by 358 is 0 with a remainder of 16.
Write down 0 as next digit of the result. 
Result so far: 255310.0
If we take 0 away from 16, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 9:
When dividing 160 by 358, we get 0 with a remainder of 160.
Record the quotient 0 as the next digit in the result. 
Result so far: 255310.0
Subtract 0 from 160 to get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

On to step 10:
358 can be fit into 1600 4 times, resulting in a remainder of 168.
Record the quotient 4 as the next digit in the result. 
Result so far: 255310.04
Deduct 1432 from 1600 and we're left with 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Going ahead to step 11:
358 goes into 1680 4 times with a remainder of 248.
Write down 4 as next digit of the result. 
Result so far: 255310.044
If we subtract 1432 from 1680, we get 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

The final outcome is 255310.044, with a leftover of 0.0248.