We look at the division of 213553 by 79 
The aim is to understand the frequency of 79 in 213553.

On to step 1:
79 goes into 2 0 times with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 79

Let's proceed to step 2:
If we divide 21 by 79, we get 0 and a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Grab the next digit (3) from the dividend, add it to 21, then carry on: 213 / 79

On to step 3:
79 can be fit into 213 2 times, resulting in a remainder of 55.
The next digit of our result is 2. 
Result so far: 2.0
If we take 158 away from 213, we end up with 55.
Grab the next digit (5) from the dividend, add it to 55, then carry on: 555 / 79

On to step 4:
If we divide 555 by 79, we get 7 and a remainder of 2.
Put 7 as the next digit of the answer. 
Result so far: 27.0
If we subtract 553 from 555, we get 2.
Append the next digit (5) from the dividend to 2 and continue with: 25 / 79

Advancing to step 5:
When dividing 25 by 79, we get 0 with a remainder of 25.
Record the quotient 0 as the next digit in the result. 
Result so far: 270.0
If we subtract 0 from 25, we get 25.
Append the next digit (3) from the dividend to 25 and continue with: 253 / 79

Let's proceed to step 6:
79 can be fit into 253 3 times, resulting in a remainder of 16.
Use 3 as the next digit of our solution. 
Result so far: 2703.0
Deduct 237 from 253 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 7:
If we divide 160 by 79, we get 2 and a remainder of 2.
Record the quotient 2 as the next digit in the result. 
Result so far: 2703.2
Deduct 158 from 160 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 8:
79 goes into 20 0 times with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 2703.2
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 9:
If we divide 200 by 79, we get 2 and a remainder of 42.
Use 2 as the next digit of our solution. 
Result so far: 2703.202
If we subtract 158 from 200, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 10:
420 divided by 79 is 5 with a remainder of 25.
Write down 5 as next digit of the result. 
Result so far: 2703.2025
If we subtract 395 from 420, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 11:
79 can be fit into 250 3 times, resulting in a remainder of 13.
Record the quotient 3 as the next digit in the result. 
Result so far: 2703.20253
The remainder is 13 after subtracting 237 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 12:
When dividing 130 by 79, we get 1 with a remainder of 51.
Use 1 as the next digit of our solution. 
Result so far: 2703.202531
Subtract 79 from 130 to get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Let's proceed to step 13:
79 goes into 510 6 times with a remainder of 36.
Put 6 as the next digit of the answer. 
Result so far: 2703.2025316
If we subtract 474 from 510, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 14:
If we divide 360 by 79, we get 4 and a remainder of 44.
The number 4 becomes the next digit in our result. 
Result so far: 2703.20253164
If we take 316 away from 360, we end up with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Our division results in 2703.20253164 with a remaining 4.4e-08.