373516 ÷ 99 
The aim is to understand the frequency of 99 in 373516.

Step 1:
When dividing 3 by 99, we get 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Take the next digit (7) from the dividend and append it to 3, then repeat: 37 / 99

Step 2:
The number 99 fits into 37 0 times, leaving a remainder of 37.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 37, we end up with 37.
Append the next digit (3) from the dividend to 37 and continue with: 373 / 99

Step 3:
If we divide 373 by 99, we get 3 and a remainder of 76.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we subtract 297 from 373, we get 76.
Append the next digit (5) from the dividend to 76 and continue with: 765 / 99

On to step 4:
The number 99 fits into 765 7 times, leaving a remainder of 72.
Use 7 as the next digit of our solution. 
Result so far: 37.0
If we subtract 693 from 765, we get 72.
Fetch the next digit (1) from the dividend, attach it to 72 and continue: 721 / 99

Going ahead to step 5:
99 can be fit into 721 7 times, resulting in a remainder of 28.
The number 7 becomes the next digit in our result. 
Result so far: 377.0
If we take 693 away from 721, we end up with 28.
Bring next digit (6) of the dividend behind the 28 and repeat the process: 286 / 99

Advancing to step 6:
99 goes into 286 2 times with a remainder of 88.
Write down 2 as next digit of the result. 
Result so far: 3772.0
Subtract 198 from 286 to get 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

On to step 7:
880 divided by 99 is 8 with a remainder of 88.
The number 8 becomes the next digit in our result. 
Result so far: 3772.8
Deduct 792 from 880 and we're left with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Advancing to step 8:
When dividing 880 by 99, we get 8 with a remainder of 88.
Put 8 as the next digit of the answer. 
Result so far: 3772.88
Deduct 792 from 880 and we're left with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

The quotient of the division is 3772.88, and the remainder is 0.088.