We look at the division of 919990 by 73 
The aim is to understand the frequency of 73 in 919990.

Advancing to step 1:
73 goes into 9 0 times with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Bring next digit (1) of the dividend behind the 9 and repeat the process: 91 / 73

Moving on to step 2:
91 divided by 73 is 1 with a remainder of 18.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 73 from 91 leaves us with 18.
Append the next digit (9) from the dividend to 18 and continue with: 189 / 73

On to step 3:
73 goes into 189 2 times with a remainder of 43.
Write down 2 as next digit of the result. 
Result so far: 12.0
If we take 146 away from 189, we end up with 43.
Include the next digit (9) from the dividend after 43, then repeat: 439 / 73

Going ahead to step 4:
If we divide 439 by 73, we get 6 and a remainder of 1.
Record the quotient 6 as the next digit in the result. 
Result so far: 126.0
Subtracting 438 from 439 leaves us with 1.
Grab the next digit (9) from the dividend, add it to 1, then carry on: 19 / 73

Going ahead to step 5:
The number 73 fits into 19 0 times, leaving a remainder of 19.
Record the quotient 0 as the next digit in the result. 
Result so far: 1260.0
If we take 0 away from 19, we end up with 19.
Include the next digit (0) from the dividend after 19, then repeat: 190 / 73

Going ahead to step 6:
The number 73 fits into 190 2 times, leaving a remainder of 44.
Use 2 as the next digit of our solution. 
Result so far: 12602.0
If we subtract 146 from 190, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Step 7:
The number 73 fits into 440 6 times, leaving a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 12602.6
If we take 438 away from 440, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 8:
20 divided by 73 is 0 with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 12602.6
Deduct 0 from 20 and we're left with 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 9:
When dividing 200 by 73, we get 2 with a remainder of 54.
Write down 2 as next digit of the result. 
Result so far: 12602.602
Deduct 146 from 200 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Step 10:
If we divide 540 by 73, we get 7 and a remainder of 29.
Write down 7 as next digit of the result. 
Result so far: 12602.6027
The remainder is 29 after subtracting 511 from 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Step 11:
73 can be fit into 290 3 times, resulting in a remainder of 71.
The next digit of our result is 3. 
Result so far: 12602.60273
The remainder is 71 after subtracting 219 from 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Going ahead to step 12:
73 can be fit into 710 9 times, resulting in a remainder of 53.
The next digit of our result is 9. 
Result so far: 12602.602739
If we take 657 away from 710, we end up with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Let's proceed to step 13:
530 divided by 73 is 7 with a remainder of 19.
The next digit of our result is 7. 
Result so far: 12602.6027397
The remainder is 19 after subtracting 511 from 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Moving on to step 14:
When dividing 190 by 73, we get 2 with a remainder of 44.
Write down 2 as next digit of the result. 
Result so far: 12602.60273972
If we take 146 away from 190, we end up with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Our division results in 12602.60273972 with a remaining 4.4e-08.