Let's divide 21495878 by 53
The aim is to understand the frequency of 53 in 21495878.

Moving on to step 1:
When dividing 2 by 53, we get 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 53

Advancing to step 2:
The number 53 fits into 21 0 times, leaving a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Grab the next digit (4) from the dividend, add it to 21, then carry on: 214 / 53

Going ahead to step 3:
53 goes into 214 4 times with a remainder of 2.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
If we subtract 212 from 214, we get 2.
Fetch the next digit (9) from the dividend, attach it to 2 and continue: 29 / 53

Moving on to step 4:
The number 53 fits into 29 0 times, leaving a remainder of 29.
The next digit of our result is 0. 
Result so far: 40.0
Subtract 0 from 29 to get 29.
Take the next digit (5) from the dividend and append it to 29, then repeat: 295 / 53

Step 5:
53 goes into 295 5 times with a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 405.0
If we take 265 away from 295, we end up with 30.
Fetch the next digit (8) from the dividend, attach it to 30 and continue: 308 / 53

Step 6:
53 goes into 308 5 times with a remainder of 43.
Write down 5 as next digit of the result. 
Result so far: 4055.0
Deduct 265 from 308 and we're left with 43.
Include the next digit (7) from the dividend after 43, then repeat: 437 / 53

Advancing to step 7:
53 can be fit into 437 8 times, resulting in a remainder of 13.
The number 8 becomes the next digit in our result. 
Result so far: 40558.0
Subtract 424 from 437 to get 13.
Include the next digit (8) from the dividend after 13, then repeat: 138 / 53

Advancing to step 8:
When dividing 138 by 53, we get 2 with a remainder of 32.
The next digit of our result is 2. 
Result so far: 405582.0
If we subtract 106 from 138, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 9:
When dividing 320 by 53, we get 6 with a remainder of 2.
Record the quotient 6 as the next digit in the result. 
Result so far: 405582.6
If we subtract 318 from 320, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 10:
53 goes into 20 0 times with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 405582.6
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 11:
200 divided by 53 is 3 with a remainder of 41.
Record the quotient 3 as the next digit in the result. 
Result so far: 405582.603
Subtracting 159 from 200 leaves us with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Going ahead to step 12:
53 can be fit into 410 7 times, resulting in a remainder of 39.
The next digit of our result is 7. 
Result so far: 405582.6037
Deduct 371 from 410 and we're left with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

On to step 13:
390 divided by 53 is 7 with a remainder of 19.
Put 7 as the next digit of the answer. 
Result so far: 405582.60377
The remainder is 19 after subtracting 371 from 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

The quotient of the division is 405582.60377, and the remainder is 1.9e-05.