We look at the division of 87791190 by 354 
The aim is to understand the frequency of 354 in 87791190.

Moving on to step 1:
354 goes into 8 0 times with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 354

On to step 2:
When dividing 87 by 354, we get 0 with a remainder of 87.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 87, we get 87.
Take the next digit (7) from the dividend and append it to 87, then repeat: 877 / 354

On to step 3:
877 divided by 354 is 2 with a remainder of 169.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtracting 708 from 877 leaves us with 169.
Include the next digit (9) from the dividend after 169, then repeat: 1699 / 354

Let's proceed to step 4:
354 can be fit into 1699 4 times, resulting in a remainder of 283.
Put 4 as the next digit of the answer. 
Result so far: 24.0
If we take 1416 away from 1699, we end up with 283.
Grab the next digit (1) from the dividend, add it to 283, then carry on: 2831 / 354

Advancing to step 5:
2831 divided by 354 is 7 with a remainder of 353.
The number 7 becomes the next digit in our result. 
Result so far: 247.0
If we subtract 2478 from 2831, we get 353.
Include the next digit (1) from the dividend after 353, then repeat: 3531 / 354

On to step 6:
354 goes into 3531 9 times with a remainder of 345.
The number 9 becomes the next digit in our result. 
Result so far: 2479.0
Subtract 3186 from 3531 to get 345.
Take the next digit (9) from the dividend and append it to 345, then repeat: 3459 / 354

Moving on to step 7:
354 can be fit into 3459 9 times, resulting in a remainder of 273.
The next digit of our result is 9. 
Result so far: 24799.0
If we subtract 3186 from 3459, we get 273.
Append the next digit (0) from the dividend to 273 and continue with: 2730 / 354

Going ahead to step 8:
354 goes into 2730 7 times with a remainder of 252.
Use 7 as the next digit of our solution. 
Result so far: 247997.0
Deduct 2478 from 2730 and we're left with 252.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

Let's proceed to step 9:
2520 divided by 354 is 7 with a remainder of 42.
The next digit of our result is 7. 
Result so far: 247997.7
If we subtract 2478 from 2520, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 10:
The number 354 fits into 420 1 times, leaving a remainder of 66.
The next digit of our result is 1. 
Result so far: 247997.71
If we subtract 354 from 420, we get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Moving on to step 11:
354 goes into 660 1 times with a remainder of 306.
The number 1 becomes the next digit in our result. 
Result so far: 247997.711
If we subtract 354 from 660, we get 306.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3060, and continue the process.

The final result is 247997.711 with a remainder of 0.0306.