49911079 ÷ 355 
The aim is to understand the frequency of 355 in 49911079.

Step 1:
When dividing 4 by 355, we get 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Fetch the next digit (9) from the dividend, attach it to 4 and continue: 49 / 355

Step 2:
If we divide 49 by 355, we get 0 and a remainder of 49.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 49 after subtracting 0 from 49.
Fetch the next digit (9) from the dividend, attach it to 49 and continue: 499 / 355

On to step 3:
499 divided by 355 is 1 with a remainder of 144.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 355 from 499, we get 144.
Include the next digit (1) from the dividend after 144, then repeat: 1441 / 355

On to step 4:
If we divide 1441 by 355, we get 4 and a remainder of 21.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
If we subtract 1420 from 1441, we get 21.
Grab the next digit (1) from the dividend, add it to 21, then carry on: 211 / 355

Moving on to step 5:
If we divide 211 by 355, we get 0 and a remainder of 211.
The next digit of our result is 0. 
Result so far: 140.0
Deduct 0 from 211 and we're left with 211.
Include the next digit (0) from the dividend after 211, then repeat: 2110 / 355

Moving on to step 6:
If we divide 2110 by 355, we get 5 and a remainder of 335.
Put 5 as the next digit of the answer. 
Result so far: 1405.0
Deduct 1775 from 2110 and we're left with 335.
Append the next digit (7) from the dividend to 335 and continue with: 3357 / 355

Going ahead to step 7:
When dividing 3357 by 355, we get 9 with a remainder of 162.
Use 9 as the next digit of our solution. 
Result so far: 14059.0
Deduct 3195 from 3357 and we're left with 162.
Take the next digit (9) from the dividend and append it to 162, then repeat: 1629 / 355

Let's proceed to step 8:
The number 355 fits into 1629 4 times, leaving a remainder of 209.
Use 4 as the next digit of our solution. 
Result so far: 140594.0
The remainder is 209 after subtracting 1420 from 1629.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2090, and continue the process.

On to step 9:
355 can be fit into 2090 5 times, resulting in a remainder of 315.
Put 5 as the next digit of the answer. 
Result so far: 140594.5
If we take 1775 away from 2090, we end up with 315.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3150, and continue the process.

Advancing to step 10:
355 can be fit into 3150 8 times, resulting in a remainder of 310.
The next digit of our result is 8. 
Result so far: 140594.58
Deduct 2840 from 3150 and we're left with 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Advancing to step 11:
If we divide 3100 by 355, we get 8 and a remainder of 260.
Write down 8 as next digit of the result. 
Result so far: 140594.588
If we subtract 2840 from 3100, we get 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Our division results in 140594.588 with a remaining 0.026.