We look at the division of 9891519 by 942 
The aim is to understand the frequency of 942 in 9891519.

On to step 1:
9 divided by 942 is 0 with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Append the next digit (8) from the dividend to 9 and continue with: 98 / 942

On to step 2:
942 goes into 98 0 times with a remainder of 98.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 98 to get 98.
Grab the next digit (9) from the dividend, add it to 98, then carry on: 989 / 942

Step 3:
If we divide 989 by 942, we get 1 and a remainder of 47.
The next digit of our result is 1. 
Result so far: 1.0
If we take 942 away from 989, we end up with 47.
Fetch the next digit (1) from the dividend, attach it to 47 and continue: 471 / 942

Step 4:
942 can be fit into 471 0 times, resulting in a remainder of 471.
The next digit of our result is 0. 
Result so far: 10.0
If we subtract 0 from 471, we get 471.
Fetch the next digit (5) from the dividend, attach it to 471 and continue: 4715 / 942

Moving on to step 5:
942 can be fit into 4715 5 times, resulting in a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 105.0
Deduct 4710 from 4715 and we're left with 5.
Grab the next digit (1) from the dividend, add it to 5, then carry on: 51 / 942

Moving on to step 6:
If we divide 51 by 942, we get 0 and a remainder of 51.
Use 0 as the next digit of our solution. 
Result so far: 1050.0
The remainder is 51 after subtracting 0 from 51.
Bring next digit (9) of the dividend behind the 51 and repeat the process: 519 / 942

Advancing to step 7:
942 goes into 519 0 times with a remainder of 519.
Write down 0 as next digit of the result. 
Result so far: 10500.0
The remainder is 519 after subtracting 0 from 519.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5190, and continue the process.

On to step 8:
942 can be fit into 5190 5 times, resulting in a remainder of 480.
Record the quotient 5 as the next digit in the result. 
Result so far: 10500.5
Subtracting 4710 from 5190 leaves us with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Moving on to step 9:
4800 divided by 942 is 5 with a remainder of 90.
The next digit of our result is 5. 
Result so far: 10500.55
Subtract 4710 from 4800 to get 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

The final outcome is 10500.55, with a leftover of 0.09.