8219901 ÷ 180 
The aim is to understand the frequency of 180 in 8219901.

Going ahead to step 1:
8 divided by 180 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Fetch the next digit (2) from the dividend, attach it to 8 and continue: 82 / 180

On to step 2:
The number 180 fits into 82 0 times, leaving a remainder of 82.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 82, we end up with 82.
Include the next digit (1) from the dividend after 82, then repeat: 821 / 180

On to step 3:
821 divided by 180 is 4 with a remainder of 101.
Use 4 as the next digit of our solution. 
Result so far: 4.0
If we take 720 away from 821, we end up with 101.
Include the next digit (9) from the dividend after 101, then repeat: 1019 / 180

Going ahead to step 4:
If we divide 1019 by 180, we get 5 and a remainder of 119.
The next digit of our result is 5. 
Result so far: 45.0
If we subtract 900 from 1019, we get 119.
Take the next digit (9) from the dividend and append it to 119, then repeat: 1199 / 180

Moving on to step 5:
When dividing 1199 by 180, we get 6 with a remainder of 119.
The next digit of our result is 6. 
Result so far: 456.0
If we take 1080 away from 1199, we end up with 119.
Bring next digit (0) of the dividend behind the 119 and repeat the process: 1190 / 180

On to step 6:
180 can be fit into 1190 6 times, resulting in a remainder of 110.
Record the quotient 6 as the next digit in the result. 
Result so far: 4566.0
The remainder is 110 after subtracting 1080 from 1190.
Bring next digit (1) of the dividend behind the 110 and repeat the process: 1101 / 180

Advancing to step 7:
The number 180 fits into 1101 6 times, leaving a remainder of 21.
Record the quotient 6 as the next digit in the result. 
Result so far: 45666.0
Subtract 1080 from 1101 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Let's proceed to step 8:
The number 180 fits into 210 1 times, leaving a remainder of 30.
Write down 1 as next digit of the result. 
Result so far: 45666.1
The remainder is 30 after subtracting 180 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 9:
300 divided by 180 is 1 with a remainder of 120.
The number 1 becomes the next digit in our result. 
Result so far: 45666.11
If we take 180 away from 300, we end up with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Our division results in 45666.11 with a remaining 0.12.