73137802 ÷ 75 
The aim is to understand the frequency of 75 in 73137802.

On to step 1:
If we divide 7 by 75, we get 0 and a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Append the next digit (3) from the dividend to 7 and continue with: 73 / 75

Going ahead to step 2:
75 goes into 73 0 times with a remainder of 73.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 73 and we're left with 73.
Take the next digit (1) from the dividend and append it to 73, then repeat: 731 / 75

Advancing to step 3:
731 divided by 75 is 9 with a remainder of 56.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Subtract 675 from 731 to get 56.
Append the next digit (3) from the dividend to 56 and continue with: 563 / 75

On to step 4:
75 can be fit into 563 7 times, resulting in a remainder of 38.
The next digit of our result is 7. 
Result so far: 97.0
If we take 525 away from 563, we end up with 38.
Grab the next digit (7) from the dividend, add it to 38, then carry on: 387 / 75

Step 5:
If we divide 387 by 75, we get 5 and a remainder of 12.
The next digit of our result is 5. 
Result so far: 975.0
The remainder is 12 after subtracting 375 from 387.
Grab the next digit (8) from the dividend, add it to 12, then carry on: 128 / 75

Advancing to step 6:
When dividing 128 by 75, we get 1 with a remainder of 53.
The next digit of our result is 1. 
Result so far: 9751.0
Deduct 75 from 128 and we're left with 53.
Grab the next digit (0) from the dividend, add it to 53, then carry on: 530 / 75

Going ahead to step 7:
When dividing 530 by 75, we get 7 with a remainder of 5.
The next digit of our result is 7. 
Result so far: 97517.0
Deduct 525 from 530 and we're left with 5.
Append the next digit (2) from the dividend to 5 and continue with: 52 / 75

Moving on to step 8:
75 goes into 52 0 times with a remainder of 52.
Use 0 as the next digit of our solution. 
Result so far: 975170.0
Deduct 0 from 52 and we're left with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Let's proceed to step 9:
520 divided by 75 is 6 with a remainder of 70.
The next digit of our result is 6. 
Result so far: 975170.6
The remainder is 70 after subtracting 450 from 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Going ahead to step 10:
75 can be fit into 700 9 times, resulting in a remainder of 25.
Put 9 as the next digit of the answer. 
Result so far: 975170.69
The remainder is 25 after subtracting 675 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Advancing to step 11:
When dividing 250 by 75, we get 3 with a remainder of 25.
The number 3 becomes the next digit in our result. 
Result so far: 975170.693
If we subtract 225 from 250, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 12:
250 divided by 75 is 3 with a remainder of 25.
Put 3 as the next digit of the answer. 
Result so far: 975170.6933
The remainder is 25 after subtracting 225 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

The quotient of the division is 975170.6933, and the remainder is 0.00025.