615410 ÷ 42 
The aim is to understand the frequency of 42 in 615410.

On to step 1:
If we divide 6 by 42, we get 0 and a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Grab the next digit (1) from the dividend, add it to 6, then carry on: 61 / 42

Advancing to step 2:
42 goes into 61 1 times with a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 19 after subtracting 42 from 61.
Append the next digit (5) from the dividend to 19 and continue with: 195 / 42

Step 3:
The number 42 fits into 195 4 times, leaving a remainder of 27.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
Subtract 168 from 195 to get 27.
Fetch the next digit (4) from the dividend, attach it to 27 and continue: 274 / 42

Advancing to step 4:
274 divided by 42 is 6 with a remainder of 22.
Put 6 as the next digit of the answer. 
Result so far: 146.0
The remainder is 22 after subtracting 252 from 274.
Append the next digit (1) from the dividend to 22 and continue with: 221 / 42

Advancing to step 5:
42 can be fit into 221 5 times, resulting in a remainder of 11.
The next digit of our result is 5. 
Result so far: 1465.0
Deduct 210 from 221 and we're left with 11.
Grab the next digit (0) from the dividend, add it to 11, then carry on: 110 / 42

Moving on to step 6:
42 can be fit into 110 2 times, resulting in a remainder of 26.
Write down 2 as next digit of the result. 
Result so far: 14652.0
Deduct 84 from 110 and we're left with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 7:
260 divided by 42 is 6 with a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 14652.6
Deduct 252 from 260 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 8:
42 goes into 80 1 times with a remainder of 38.
The number 1 becomes the next digit in our result. 
Result so far: 14652.61
The remainder is 38 after subtracting 42 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 9:
The number 42 fits into 380 9 times, leaving a remainder of 2.
Write down 9 as next digit of the result. 
Result so far: 14652.619
If we subtract 378 from 380, 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.

On to step 10:
When dividing 20 by 42, we get 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 14652.619
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.

Step 11:
If we divide 200 by 42, we get 4 and a remainder of 32.
Record the quotient 4 as the next digit in the result. 
Result so far: 14652.61904
Subtract 168 from 200 to 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.

Advancing to step 12:
42 goes into 320 7 times with a remainder of 26.
The next digit of our result is 7. 
Result so far: 14652.619047
Subtract 294 from 320 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

On to step 13:
When dividing 260 by 42, we get 6 with a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 14652.6190476
The remainder is 8 after subtracting 252 from 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 14:
42 goes into 80 1 times with a remainder of 38.
Use 1 as the next digit of our solution. 
Result so far: 14652.61904761
If we take 42 away from 80, 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 14652.61904761 with a remainder of 3.8e-08.