378899 ÷ 99 
The aim is to understand the frequency of 99 in 378899.

Moving on to step 1:
99 goes into 3 0 times with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Append the next digit (7) from the dividend to 3 and continue with: 37 / 99

Let's proceed to step 2:
99 goes into 37 0 times with a remainder of 37.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 37, we get 37.
Grab the next digit (8) from the dividend, add it to 37, then carry on: 378 / 99

Let's proceed to step 3:
If we divide 378 by 99, we get 3 and a remainder of 81.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Deduct 297 from 378 and we're left with 81.
Bring next digit (8) of the dividend behind the 81 and repeat the process: 818 / 99

Moving on to step 4:
818 divided by 99 is 8 with a remainder of 26.
Use 8 as the next digit of our solution. 
Result so far: 38.0
If we take 792 away from 818, we end up with 26.
Grab the next digit (9) from the dividend, add it to 26, then carry on: 269 / 99

Advancing to step 5:
99 can be fit into 269 2 times, resulting in a remainder of 71.
The number 2 becomes the next digit in our result. 
Result so far: 382.0
Subtracting 198 from 269 leaves us with 71.
Bring next digit (9) of the dividend behind the 71 and repeat the process: 719 / 99

Moving on to step 6:
719 divided by 99 is 7 with a remainder of 26.
Put 7 as the next digit of the answer. 
Result so far: 3827.0
If we take 693 away from 719, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Let's proceed to step 7:
When dividing 260 by 99, we get 2 with a remainder of 62.
The number 2 becomes the next digit in our result. 
Result so far: 3827.2
Subtract 198 from 260 to get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Step 8:
99 can be fit into 620 6 times, resulting in a remainder of 26.
Use 6 as the next digit of our solution. 
Result so far: 3827.26
If we take 594 away from 620, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Advancing to step 9:
260 divided by 99 is 2 with a remainder of 62.
Use 2 as the next digit of our solution. 
Result so far: 3827.262
If we take 198 away from 260, we end up with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Advancing to step 10:
620 divided by 99 is 6 with a remainder of 26.
The next digit of our result is 6. 
Result so far: 3827.2626
If we take 594 away from 620, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 11:
99 goes into 260 2 times with a remainder of 62.
Write down 2 as next digit of the result. 
Result so far: 3827.26262
If we take 198 away from 260, we end up with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Step 12:
The number 99 fits into 620 6 times, leaving a remainder of 26.
Record the quotient 6 as the next digit in the result. 
Result so far: 3827.262626
The remainder is 26 after subtracting 594 from 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

On to step 13:
The number 99 fits into 260 2 times, leaving a remainder of 62.
Record the quotient 2 as the next digit in the result. 
Result so far: 3827.2626262
If we take 198 away from 260, we end up with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

On to step 14:
620 divided by 99 is 6 with a remainder of 26.
Write down 6 as next digit of the result. 
Result so far: 3827.26262626
Deduct 594 from 620 and we're left with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Our division results in 3827.26262626 with a remaining 2.6e-08.