We divide 251512 by 42
The aim is to understand the frequency of 42 in 251512.

Let's proceed to step 1:
42 can be fit into 2 0 times, resulting in a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Append the next digit (5) from the dividend to 2 and continue with: 25 / 42

Advancing to step 2:
The number 42 fits into 25 0 times, leaving a remainder of 25.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 25 after subtracting 0 from 25.
Include the next digit (1) from the dividend after 25, then repeat: 251 / 42

Advancing to step 3:
42 goes into 251 5 times with a remainder of 41.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Subtracting 210 from 251 leaves us with 41.
Take the next digit (5) from the dividend and append it to 41, then repeat: 415 / 42

On to step 4:
42 goes into 415 9 times with a remainder of 37.
Use 9 as the next digit of our solution. 
Result so far: 59.0
Deduct 378 from 415 and we're left with 37.
Take the next digit (1) from the dividend and append it to 37, then repeat: 371 / 42

Step 5:
If we divide 371 by 42, we get 8 and a remainder of 35.
The number 8 becomes the next digit in our result. 
Result so far: 598.0
If we take 336 away from 371, we end up with 35.
Include the next digit (2) from the dividend after 35, then repeat: 352 / 42

Moving on to step 6:
42 can be fit into 352 8 times, resulting in a remainder of 16.
The next digit of our result is 8. 
Result so far: 5988.0
The remainder is 16 after subtracting 336 from 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 7:
If we divide 160 by 42, we get 3 and a remainder of 34.
Put 3 as the next digit of the answer. 
Result so far: 5988.3
Subtract 126 from 160 to get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Going ahead to step 8:
42 goes into 340 8 times with a remainder of 4.
Use 8 as the next digit of our solution. 
Result so far: 5988.38
If we take 336 away from 340, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 9:
If we divide 40 by 42, we get 0 and a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 5988.38
Deduct 0 from 40 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 10:
42 goes into 400 9 times with a remainder of 22.
Write down 9 as next digit of the result. 
Result so far: 5988.3809
If we subtract 378 from 400, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 11:
When dividing 220 by 42, we get 5 with a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 5988.38095
Subtract 210 from 220 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 12:
42 goes into 100 2 times with a remainder of 16.
Use 2 as the next digit of our solution. 
Result so far: 5988.380952
If we subtract 84 from 100, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 13:
42 can be fit into 160 3 times, resulting in a remainder of 34.
Put 3 as the next digit of the answer. 
Result so far: 5988.3809523
Subtracting 126 from 160 leaves us with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Step 14:
When dividing 340 by 42, we get 8 with a remainder of 4.
The next digit of our result is 8. 
Result so far: 5988.38095238
Deduct 336 from 340 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final outcome is 5988.38095238, with a leftover of 4e-09.