Let's divide 213800 by 45
The aim is to understand the frequency of 45 in 213800.

Moving on to step 1:
When dividing 2 by 45, we get 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 45

Advancing to step 2:
When dividing 21 by 45, we get 0 with a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Fetch the next digit (3) from the dividend, attach it to 21 and continue: 213 / 45

Advancing to step 3:
When dividing 213 by 45, we get 4 with a remainder of 33.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtracting 180 from 213 leaves us with 33.
Grab the next digit (8) from the dividend, add it to 33, then carry on: 338 / 45

Moving on to step 4:
45 can be fit into 338 7 times, resulting in a remainder of 23.
The next digit of our result is 7. 
Result so far: 47.0
Subtracting 315 from 338 leaves us with 23.
Grab the next digit (0) from the dividend, add it to 23, then carry on: 230 / 45

Going ahead to step 5:
If we divide 230 by 45, we get 5 and a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 475.0
Subtracting 225 from 230 leaves us with 5.
Fetch the next digit (0) from the dividend, attach it to 5 and continue: 50 / 45

Let's proceed to step 6:
When dividing 50 by 45, we get 1 with a remainder of 5.
Record the quotient 1 as the next digit in the result. 
Result so far: 4751.0
If we take 45 away from 50, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 7:
The number 45 fits into 50 1 times, leaving a remainder of 5.
The next digit of our result is 1. 
Result so far: 4751.1
If we subtract 45 from 50, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 8:
When dividing 50 by 45, we get 1 with a remainder of 5.
The next digit of our result is 1. 
Result so far: 4751.11
Subtract 45 from 50 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

After the division, we end up with 4751.11 and a remainder of 0.005.