15945751 ÷ 142 
The aim is to understand the frequency of 142 in 15945751.

On to step 1:
If we divide 1 by 142, we get 0 and a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 142

Going ahead to step 2:
142 goes into 15 0 times with a remainder of 15.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 15 leaves us with 15.
Fetch the next digit (9) from the dividend, attach it to 15 and continue: 159 / 142

Step 3:
When dividing 159 by 142, we get 1 with a remainder of 17.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 142 from 159 and we're left with 17.
Take the next digit (4) from the dividend and append it to 17, then repeat: 174 / 142

Step 4:
If we divide 174 by 142, we get 1 and a remainder of 32.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
If we take 142 away from 174, we end up with 32.
Take the next digit (5) from the dividend and append it to 32, then repeat: 325 / 142

Moving on to step 5:
142 can be fit into 325 2 times, resulting in a remainder of 41.
The number 2 becomes the next digit in our result. 
Result so far: 112.0
Subtract 284 from 325 to get 41.
Fetch the next digit (7) from the dividend, attach it to 41 and continue: 417 / 142

Going ahead to step 6:
The number 142 fits into 417 2 times, leaving a remainder of 133.
Write down 2 as next digit of the result. 
Result so far: 1122.0
If we subtract 284 from 417, we get 133.
Fetch the next digit (5) from the dividend, attach it to 133 and continue: 1335 / 142

Step 7:
When dividing 1335 by 142, we get 9 with a remainder of 57.
The number 9 becomes the next digit in our result. 
Result so far: 11229.0
Subtracting 1278 from 1335 leaves us with 57.
Append the next digit (1) from the dividend to 57 and continue with: 571 / 142

Let's proceed to step 8:
142 goes into 571 4 times with a remainder of 3.
Write down 4 as next digit of the result. 
Result so far: 112294.0
If we take 568 away from 571, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 9:
The number 142 fits into 30 0 times, leaving a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 112294.0
Subtract 0 from 30 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 10:
300 divided by 142 is 2 with a remainder of 16.
Use 2 as the next digit of our solution. 
Result so far: 112294.02
If we take 284 away from 300, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 11:
160 divided by 142 is 1 with a remainder of 18.
Use 1 as the next digit of our solution. 
Result so far: 112294.021
The remainder is 18 after subtracting 142 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 12:
When dividing 180 by 142, we get 1 with a remainder of 38.
Use 1 as the next digit of our solution. 
Result so far: 112294.0211
If we take 142 away from 180, 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.

After the division, we end up with 112294.0211 and a remainder of 0.00038.