645337 ÷ 53 
The aim is to understand the frequency of 53 in 645337.

Let's proceed to step 1:
The number 53 fits into 6 0 times, leaving a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 53

Step 2:
If we divide 64 by 53, we get 1 and a remainder of 11.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 53 from 64 to get 11.
Append the next digit (5) from the dividend to 11 and continue with: 115 / 53

Step 3:
When dividing 115 by 53, we get 2 with a remainder of 9.
Write down 2 as next digit of the result. 
Result so far: 12.0
The remainder is 9 after subtracting 106 from 115.
Grab the next digit (3) from the dividend, add it to 9, then carry on: 93 / 53

Moving on to step 4:
53 can be fit into 93 1 times, resulting in a remainder of 40.
Put 1 as the next digit of the answer. 
Result so far: 121.0
If we take 53 away from 93, we end up with 40.
Bring next digit (3) of the dividend behind the 40 and repeat the process: 403 / 53

Going ahead to step 5:
When dividing 403 by 53, we get 7 with a remainder of 32.
The number 7 becomes the next digit in our result. 
Result so far: 1217.0
Subtract 371 from 403 to get 32.
Bring next digit (7) of the dividend behind the 32 and repeat the process: 327 / 53

Moving on to step 6:
When dividing 327 by 53, we get 6 with a remainder of 9.
The next digit of our result is 6. 
Result so far: 12176.0
Subtract 318 from 327 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 7:
53 goes into 90 1 times with a remainder of 37.
The next digit of our result is 1. 
Result so far: 12176.1
If we subtract 53 from 90, we get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

On to step 8:
53 can be fit into 370 6 times, resulting in a remainder of 52.
Put 6 as the next digit of the answer. 
Result so far: 12176.16
The remainder is 52 after subtracting 318 from 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Let's proceed to step 9:
If we divide 520 by 53, we get 9 and a remainder of 43.
The next digit of our result is 9. 
Result so far: 12176.169
Deduct 477 from 520 and we're left with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Moving on to step 10:
When dividing 430 by 53, we get 8 with a remainder of 6.
The number 8 becomes the next digit in our result. 
Result so far: 12176.1698
The remainder is 6 after subtracting 424 from 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 11:
When dividing 60 by 53, we get 1 with a remainder of 7.
The number 1 becomes the next digit in our result. 
Result so far: 12176.16981
The remainder is 7 after subtracting 53 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 12:
When dividing 70 by 53, we get 1 with a remainder of 17.
Record the quotient 1 as the next digit in the result. 
Result so far: 12176.169811
Subtracting 53 from 70 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

The quotient of the division is 12176.169811, and the remainder is 1.7e-06.