220818 ÷ 71 
The aim is to understand the frequency of 71 in 220818.

On to step 1:
When dividing 2 by 71, we get 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Grab the next digit (2) from the dividend, add it to 2, then carry on: 22 / 71

On to step 2:
When dividing 22 by 71, we get 0 with a remainder of 22.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 22 and we're left with 22.
Take the next digit (0) from the dividend and append it to 22, then repeat: 220 / 71

On to step 3:
The number 71 fits into 220 3 times, leaving a remainder of 7.
The next digit of our result is 3. 
Result so far: 3.0
If we take 213 away from 220, we end up with 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 71

Step 4:
If we divide 78 by 71, we get 1 and a remainder of 7.
Record the quotient 1 as the next digit in the result. 
Result so far: 31.0
The remainder is 7 after subtracting 71 from 78.
Take the next digit (1) from the dividend and append it to 7, then repeat: 71 / 71

Let's proceed to step 5:
If we divide 71 by 71, we get 1 and a remainder of 0.
Use 1 as the next digit of our solution. 
Result so far: 311.0
Deduct 71 from 71 and we're left with 0.
Bring next digit (8) of the dividend behind the 0 and repeat the process: 8 / 71

Let's proceed to step 6:
The number 71 fits into 8 0 times, leaving a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 3110.0
If we subtract 0 from 8, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 7:
When dividing 80 by 71, we get 1 with a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 3110.1
If we take 71 away from 80, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 8:
When dividing 90 by 71, we get 1 with a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 3110.11
Deduct 71 from 90 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

The final outcome is 3110.11, with a leftover of 0.019.