We look at the division of 42083926 by 351 
The aim is to understand the frequency of 351 in 42083926.

On to step 1:
The number 351 fits into 4 0 times, leaving a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 351

Going ahead to step 2:
If we divide 42 by 351, we get 0 and a remainder of 42.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 42, we end up with 42.
Append the next digit (0) from the dividend to 42 and continue with: 420 / 351

Advancing to step 3:
If we divide 420 by 351, we get 1 and a remainder of 69.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 351 from 420, we get 69.
Fetch the next digit (8) from the dividend, attach it to 69 and continue: 698 / 351

Going ahead to step 4:
The number 351 fits into 698 1 times, leaving a remainder of 347.
Write down 1 as next digit of the result. 
Result so far: 11.0
Subtracting 351 from 698 leaves us with 347.
Grab the next digit (3) from the dividend, add it to 347, then carry on: 3473 / 351

Let's proceed to step 5:
If we divide 3473 by 351, we get 9 and a remainder of 314.
Put 9 as the next digit of the answer. 
Result so far: 119.0
If we subtract 3159 from 3473, we get 314.
Grab the next digit (9) from the dividend, add it to 314, then carry on: 3149 / 351

Moving on to step 6:
3149 divided by 351 is 8 with a remainder of 341.
The number 8 becomes the next digit in our result. 
Result so far: 1198.0
The remainder is 341 after subtracting 2808 from 3149.
Take the next digit (2) from the dividend and append it to 341, then repeat: 3412 / 351

Advancing to step 7:
3412 divided by 351 is 9 with a remainder of 253.
Write down 9 as next digit of the result. 
Result so far: 11989.0
Subtract 3159 from 3412 to get 253.
Include the next digit (6) from the dividend after 253, then repeat: 2536 / 351

Step 8:
When dividing 2536 by 351, we get 7 with a remainder of 79.
Record the quotient 7 as the next digit in the result. 
Result so far: 119897.0
Deduct 2457 from 2536 and we're left with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Moving on to step 9:
When dividing 790 by 351, we get 2 with a remainder of 88.
Record the quotient 2 as the next digit in the result. 
Result so far: 119897.2
Subtract 702 from 790 to get 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Advancing to step 10:
The number 351 fits into 880 2 times, leaving a remainder of 178.
Put 2 as the next digit of the answer. 
Result so far: 119897.22
Subtract 702 from 880 to get 178.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1780, and continue the process.

In conclusion, the division gives 119897.22 with a balance of 0.178.