702515 divided by 54 
The aim is to understand the frequency of 54 in 702515.

Let's proceed to step 1:
7 divided by 54 is 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Bring next digit (0) of the dividend behind the 7 and repeat the process: 70 / 54

On to step 2:
The number 54 fits into 70 1 times, leaving a remainder of 16.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 54 from 70 and we're left with 16.
Take the next digit (2) from the dividend and append it to 16, then repeat: 162 / 54

On to step 3:
162 divided by 54 is 3 with a remainder of 0.
The next digit of our result is 3. 
Result so far: 13.0
Subtracting 162 from 162 leaves us with 0.
Bring next digit (5) of the dividend behind the 0 and repeat the process: 5 / 54

On to step 4:
54 can be fit into 5 0 times, resulting in a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 130.0
Subtracting 0 from 5 leaves us with 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 54

Advancing to step 5:
54 can be fit into 51 0 times, resulting in a remainder of 51.
The next digit of our result is 0. 
Result so far: 1300.0
If we take 0 away from 51, we end up with 51.
Append the next digit (5) from the dividend to 51 and continue with: 515 / 54

Let's proceed to step 6:
54 goes into 515 9 times with a remainder of 29.
Record the quotient 9 as the next digit in the result. 
Result so far: 13009.0
If we subtract 486 from 515, we get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Moving on to step 7:
The number 54 fits into 290 5 times, leaving a remainder of 20.
Put 5 as the next digit of the answer. 
Result so far: 13009.5
If we subtract 270 from 290, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 8:
When dividing 200 by 54, we get 3 with a remainder of 38.
Record the quotient 3 as the next digit in the result. 
Result so far: 13009.53
Subtracting 162 from 200 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 9:
54 goes into 380 7 times with a remainder of 2.
Write down 7 as next digit of the result. 
Result so far: 13009.537
Subtract 378 from 380 to 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.

Advancing to step 10:
If we divide 20 by 54, we get 0 and a remainder of 20.
The next digit of our result is 0. 
Result so far: 13009.537
The remainder is 20 after subtracting 0 from 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:
The number 54 fits into 200 3 times, leaving a remainder of 38.
Put 3 as the next digit of the answer. 
Result so far: 13009.53703
The remainder is 38 after subtracting 162 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 12:
The number 54 fits into 380 7 times, leaving a remainder of 2.
Use 7 as the next digit of our solution. 
Result so far: 13009.537037
The remainder is 2 after subtracting 378 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 13:
If we divide 20 by 54, we get 0 and a remainder of 20.
The next digit of our result is 0. 
Result so far: 13009.537037
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 14:
When dividing 200 by 54, we get 3 with a remainder of 38.
Record the quotient 3 as the next digit in the result. 
Result so far: 13009.53703703
If we take 162 away from 200, we end up with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

The final result is 13009.53703703 with a remainder of 3.8e-08.