We look at the division of 4803946 by 155 
The aim is to understand the frequency of 155 in 4803946.

Going ahead to step 1:
155 can be fit into 4 0 times, resulting in a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Take the next digit (8) from the dividend and append it to 4, then repeat: 48 / 155

Step 2:
If we divide 48 by 155, we get 0 and a remainder of 48.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 48, we end up with 48.
Append the next digit (0) from the dividend to 48 and continue with: 480 / 155

On to step 3:
If we divide 480 by 155, we get 3 and a remainder of 15.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we take 465 away from 480, we end up with 15.
Bring next digit (3) of the dividend behind the 15 and repeat the process: 153 / 155

On to step 4:
155 goes into 153 0 times with a remainder of 153.
The next digit of our result is 0. 
Result so far: 30.0
Subtract 0 from 153 to get 153.
Bring next digit (9) of the dividend behind the 153 and repeat the process: 1539 / 155

Step 5:
1539 divided by 155 is 9 with a remainder of 144.
Record the quotient 9 as the next digit in the result. 
Result so far: 309.0
If we take 1395 away from 1539, we end up with 144.
Bring next digit (4) of the dividend behind the 144 and repeat the process: 1444 / 155

On to step 6:
1444 divided by 155 is 9 with a remainder of 49.
The next digit of our result is 9. 
Result so far: 3099.0
Subtract 1395 from 1444 to get 49.
Include the next digit (6) from the dividend after 49, then repeat: 496 / 155

Moving on to step 7:
The number 155 fits into 496 3 times, leaving a remainder of 31.
Put 3 as the next digit of the answer. 
Result so far: 30993.0
If we subtract 465 from 496, we get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

On to step 8:
155 goes into 310 2 times with a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 30993.2
Deduct 310 from 310 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 9:
When dividing 0 by 155, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 30993.2
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 10:
When dividing 0 by 155, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 30993.2
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 30993.2 with a remaining 0.0.