510138 ÷ 17 
The aim is to understand the frequency of 17 in 510138.

On to step 1:
5 divided by 17 is 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 17

Moving on to step 2:
17 can be fit into 51 3 times, resulting in a remainder of 0.
Write down 3 as next digit of the result. 
Result so far: 3.0
Deduct 51 from 51 and we're left with 0.
Grab the next digit (0) from the dividend, add it to 0, then carry on: 0 / 17

On to step 3:
When dividing 0 by 17, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 30.0
If we take 0 away from 0, we end up with 0.
Append the next digit (1) from the dividend to 0 and continue with: 1 / 17

Going ahead to step 4:
1 divided by 17 is 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 300.0
The remainder is 1 after subtracting 0 from 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 17

On to step 5:
The number 17 fits into 13 0 times, leaving a remainder of 13.
The next digit of our result is 0. 
Result so far: 3000.0
Deduct 0 from 13 and we're left with 13.
Grab the next digit (8) from the dividend, add it to 13, then carry on: 138 / 17

Advancing to step 6:
17 can be fit into 138 8 times, resulting in a remainder of 2.
The number 8 becomes the next digit in our result. 
Result so far: 30008.0
If we subtract 136 from 138, 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.

Advancing to step 7:
When dividing 20 by 17, we get 1 with a remainder of 3.
Put 1 as the next digit of the answer. 
Result so far: 30008.1
Subtract 17 from 20 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 8:
17 goes into 30 1 times with a remainder of 13.
The next digit of our result is 1. 
Result so far: 30008.11
Deduct 17 from 30 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

In conclusion, the division gives 30008.11 with a balance of 0.013.