212400 ÷ 55 
The aim is to understand the frequency of 55 in 212400.

Moving on to step 1:
The number 55 fits into 2 0 times, leaving a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 55

Going ahead to step 2:
If we divide 21 by 55, we get 0 and a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Fetch the next digit (2) from the dividend, attach it to 21 and continue: 212 / 55

Moving on to step 3:
55 can be fit into 212 3 times, resulting in a remainder of 47.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtract 165 from 212 to get 47.
Bring next digit (4) of the dividend behind the 47 and repeat the process: 474 / 55

Step 4:
The number 55 fits into 474 8 times, leaving a remainder of 34.
The number 8 becomes the next digit in our result. 
Result so far: 38.0
If we take 440 away from 474, we end up with 34.
Take the next digit (0) from the dividend and append it to 34, then repeat: 340 / 55

Going ahead to step 5:
If we divide 340 by 55, we get 6 and a remainder of 10.
The number 6 becomes the next digit in our result. 
Result so far: 386.0
Subtracting 330 from 340 leaves us with 10.
Append the next digit (0) from the dividend to 10 and continue with: 100 / 55

Moving on to step 6:
55 can be fit into 100 1 times, resulting in a remainder of 45.
Use 1 as the next digit of our solution. 
Result so far: 3861.0
If we subtract 55 from 100, we get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Moving on to step 7:
When dividing 450 by 55, we get 8 with a remainder of 10.
The number 8 becomes the next digit in our result. 
Result so far: 3861.8
If we subtract 440 from 450, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 8:
When dividing 100 by 55, we get 1 with a remainder of 45.
Record the quotient 1 as the next digit in the result. 
Result so far: 3861.81
The remainder is 45 after subtracting 55 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Step 9:
450 divided by 55 is 8 with a remainder of 10.
Put 8 as the next digit of the answer. 
Result so far: 3861.818
Deduct 440 from 450 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 10:
If we divide 100 by 55, we get 1 and a remainder of 45.
Write down 1 as next digit of the result. 
Result so far: 3861.8181
Subtracting 55 from 100 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Step 11:
450 divided by 55 is 8 with a remainder of 10.
Use 8 as the next digit of our solution. 
Result so far: 3861.81818
If we take 440 away from 450, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 12:
55 goes into 100 1 times with a remainder of 45.
Record the quotient 1 as the next digit in the result. 
Result so far: 3861.818181
If we take 55 away from 100, we end up with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Let's proceed to step 13:
If we divide 450 by 55, we get 8 and a remainder of 10.
The next digit of our result is 8. 
Result so far: 3861.8181818
Subtracting 440 from 450 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 14:
The number 55 fits into 100 1 times, leaving a remainder of 45.
Put 1 as the next digit of the answer. 
Result so far: 3861.81818181
Subtracting 55 from 100 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Our division results in 3861.81818181 with a remaining 4.5e-08.