We look at the division of 98716399 by 351 
The aim is to understand the frequency of 351 in 98716399.

Advancing to step 1:
If we divide 9 by 351, we get 0 and a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Bring next digit (8) of the dividend behind the 9 and repeat the process: 98 / 351

Going ahead to step 2:
351 can be fit into 98 0 times, resulting in a remainder of 98.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 98 leaves us with 98.
Grab the next digit (7) from the dividend, add it to 98, then carry on: 987 / 351

Moving on to step 3:
When dividing 987 by 351, we get 2 with a remainder of 285.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 702 from 987 leaves us with 285.
Bring next digit (1) of the dividend behind the 285 and repeat the process: 2851 / 351

Step 4:
351 can be fit into 2851 8 times, resulting in a remainder of 43.
Write down 8 as next digit of the result. 
Result so far: 28.0
If we subtract 2808 from 2851, we get 43.
Include the next digit (6) from the dividend after 43, then repeat: 436 / 351

Going ahead to step 5:
The number 351 fits into 436 1 times, leaving a remainder of 85.
Use 1 as the next digit of our solution. 
Result so far: 281.0
If we subtract 351 from 436, we get 85.
Take the next digit (3) from the dividend and append it to 85, then repeat: 853 / 351

Step 6:
351 goes into 853 2 times with a remainder of 151.
Use 2 as the next digit of our solution. 
Result so far: 2812.0
If we take 702 away from 853, we end up with 151.
Grab the next digit (9) from the dividend, add it to 151, then carry on: 1519 / 351

Going ahead to step 7:
351 can be fit into 1519 4 times, resulting in a remainder of 115.
The next digit of our result is 4. 
Result so far: 28124.0
Subtracting 1404 from 1519 leaves us with 115.
Grab the next digit (9) from the dividend, add it to 115, then carry on: 1159 / 351

Advancing to step 8:
351 can be fit into 1159 3 times, resulting in a remainder of 106.
Write down 3 as next digit of the result. 
Result so far: 281243.0
The remainder is 106 after subtracting 1053 from 1159.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

Moving on to step 9:
1060 divided by 351 is 3 with a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 281243.3
Deduct 1053 from 1060 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 10:
70 divided by 351 is 0 with a remainder of 70.
Put 0 as the next digit of the answer. 
Result so far: 281243.3
The remainder is 70 after subtracting 0 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Let's proceed to step 11:
351 goes into 700 1 times with a remainder of 349.
The next digit of our result is 1. 
Result so far: 281243.301
If we take 351 away from 700, we end up with 349.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3490, and continue the process.

Step 12:
The number 351 fits into 3490 9 times, leaving a remainder of 331.
The number 9 becomes the next digit in our result. 
Result so far: 281243.3019
If we subtract 3159 from 3490, we get 331.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3310, and continue the process.

Step 13:
When dividing 3310 by 351, we get 9 with a remainder of 151.
The number 9 becomes the next digit in our result. 
Result so far: 281243.30199
Subtract 3159 from 3310 to get 151.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1510, and continue the process.

After the division, we end up with 281243.30199 and a remainder of 0.000151.