We look at the division of 49006621 by 311 
The aim is to understand the frequency of 311 in 49006621.

On to step 1:
If we divide 4 by 311, we get 0 and a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Include the next digit (9) from the dividend after 4, then repeat: 49 / 311

Going ahead to step 2:
When dividing 49 by 311, we get 0 with a remainder of 49.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 49 and we're left with 49.
Include the next digit (0) from the dividend after 49, then repeat: 490 / 311

Advancing to step 3:
If we divide 490 by 311, we get 1 and a remainder of 179.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 311 from 490 to get 179.
Include the next digit (0) from the dividend after 179, then repeat: 1790 / 311

On to step 4:
1790 divided by 311 is 5 with a remainder of 235.
Use 5 as the next digit of our solution. 
Result so far: 15.0
If we subtract 1555 from 1790, we get 235.
Bring next digit (6) of the dividend behind the 235 and repeat the process: 2356 / 311

Moving on to step 5:
When dividing 2356 by 311, we get 7 with a remainder of 179.
The number 7 becomes the next digit in our result. 
Result so far: 157.0
Subtracting 2177 from 2356 leaves us with 179.
Include the next digit (6) from the dividend after 179, then repeat: 1796 / 311

Advancing to step 6:
When dividing 1796 by 311, we get 5 with a remainder of 241.
Record the quotient 5 as the next digit in the result. 
Result so far: 1575.0
Subtracting 1555 from 1796 leaves us with 241.
Take the next digit (2) from the dividend and append it to 241, then repeat: 2412 / 311

Advancing to step 7:
2412 divided by 311 is 7 with a remainder of 235.
The number 7 becomes the next digit in our result. 
Result so far: 15757.0
If we subtract 2177 from 2412, we get 235.
Fetch the next digit (1) from the dividend, attach it to 235 and continue: 2351 / 311

On to step 8:
2351 divided by 311 is 7 with a remainder of 174.
The number 7 becomes the next digit in our result. 
Result so far: 157577.0
Subtracting 2177 from 2351 leaves us with 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Moving on to step 9:
When dividing 1740 by 311, we get 5 with a remainder of 185.
Use 5 as the next digit of our solution. 
Result so far: 157577.5
If we take 1555 away from 1740, 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.

Going ahead to step 10:
The number 311 fits into 1850 5 times, leaving a remainder of 295.
Record the quotient 5 as the next digit in the result. 
Result so far: 157577.55
Subtract 1555 from 1850 to get 295.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2950, and continue the process.

Our division results in 157577.55 with a remaining 0.295.