We look at the division of 74877877 by 235 
The aim is to understand the frequency of 235 in 74877877.

On to step 1:
235 goes into 7 0 times with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Fetch the next digit (4) from the dividend, attach it to 7 and continue: 74 / 235

On to step 2:
74 divided by 235 is 0 with a remainder of 74.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 74 and we're left with 74.
Append the next digit (8) from the dividend to 74 and continue with: 748 / 235

Advancing to step 3:
748 divided by 235 is 3 with a remainder of 43.
The next digit of our result is 3. 
Result so far: 3.0
If we subtract 705 from 748, we get 43.
Take the next digit (7) from the dividend and append it to 43, then repeat: 437 / 235

Going ahead to step 4:
235 can be fit into 437 1 times, resulting in a remainder of 202.
Put 1 as the next digit of the answer. 
Result so far: 31.0
Subtract 235 from 437 to get 202.
Fetch the next digit (7) from the dividend, attach it to 202 and continue: 2027 / 235

Moving on to step 5:
2027 divided by 235 is 8 with a remainder of 147.
Use 8 as the next digit of our solution. 
Result so far: 318.0
Subtracting 1880 from 2027 leaves us with 147.
Include the next digit (8) from the dividend after 147, then repeat: 1478 / 235

Going ahead to step 6:
1478 divided by 235 is 6 with a remainder of 68.
Record the quotient 6 as the next digit in the result. 
Result so far: 3186.0
If we subtract 1410 from 1478, we get 68.
Bring next digit (7) of the dividend behind the 68 and repeat the process: 687 / 235

Going ahead to step 7:
The number 235 fits into 687 2 times, leaving a remainder of 217.
Record the quotient 2 as the next digit in the result. 
Result so far: 31862.0
Subtract 470 from 687 to get 217.
Append the next digit (7) from the dividend to 217 and continue with: 2177 / 235

On to step 8:
The number 235 fits into 2177 9 times, leaving a remainder of 62.
The next digit of our result is 9. 
Result so far: 318629.0
Subtracting 2115 from 2177 leaves us 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.

Going ahead to step 9:
If we divide 620 by 235, we get 2 and a remainder of 150.
Put 2 as the next digit of the answer. 
Result so far: 318629.2
Subtracting 470 from 620 leaves us with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Going ahead to step 10:
The number 235 fits into 1500 6 times, leaving a remainder of 90.
The number 6 becomes the next digit in our result. 
Result so far: 318629.26
If we take 1410 away from 1500, we end up with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Step 11:
When dividing 900 by 235, we get 3 with a remainder of 195.
Put 3 as the next digit of the answer. 
Result so far: 318629.263
If we take 705 away from 900, we end up with 195.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

Moving on to step 12:
If we divide 1950 by 235, we get 8 and a remainder of 70.
Put 8 as the next digit of the answer. 
Result so far: 318629.2638
If we take 1880 away from 1950, we end up with 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 13:
235 can be fit into 700 2 times, resulting in a remainder of 230.
Put 2 as the next digit of the answer. 
Result so far: 318629.26382
The remainder is 230 after subtracting 470 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Step 14:
When dividing 2300 by 235, we get 9 with a remainder of 185.
Use 9 as the next digit of our solution. 
Result so far: 318629.263829
If we take 2115 away from 2300, we end up with 185.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1850, and continue the process.

Let's proceed to step 15:
When dividing 1850 by 235, we get 7 with a remainder of 205.
Record the quotient 7 as the next digit in the result. 
Result so far: 318629.2638297
If we take 1645 away from 1850, we end up with 205.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2050, and continue the process.

Step 16:
The number 235 fits into 2050 8 times, leaving a remainder of 170.
The number 8 becomes the next digit in our result. 
Result so far: 318629.26382978
Subtract 1880 from 2050 to get 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

The final outcome is 318629.26382978, with a leftover of 1.7e-07.