We're dividing 501139 by 75 
The aim is to understand the frequency of 75 in 501139.

Let's proceed to step 1:
5 divided by 75 is 0 with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Grab the next digit (0) from the dividend, add it to 5, then carry on: 50 / 75

Let's proceed to step 2:
When dividing 50 by 75, we get 0 with a remainder of 50.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 50, we end up with 50.
Grab the next digit (1) from the dividend, add it to 50, then carry on: 501 / 75

Advancing to step 3:
75 can be fit into 501 6 times, resulting in a remainder of 51.
Put 6 as the next digit of the answer. 
Result so far: 6.0
Subtracting 450 from 501 leaves us with 51.
Append the next digit (1) from the dividend to 51 and continue with: 511 / 75

On to step 4:
The number 75 fits into 511 6 times, leaving a remainder of 61.
Put 6 as the next digit of the answer. 
Result so far: 66.0
If we take 450 away from 511, we end up with 61.
Take the next digit (3) from the dividend and append it to 61, then repeat: 613 / 75

Moving on to step 5:
75 can be fit into 613 8 times, resulting in a remainder of 13.
Write down 8 as next digit of the result. 
Result so far: 668.0
Deduct 600 from 613 and we're left with 13.
Include the next digit (9) from the dividend after 13, then repeat: 139 / 75

On to step 6:
If we divide 139 by 75, we get 1 and a remainder of 64.
The next digit of our result is 1. 
Result so far: 6681.0
Subtracting 75 from 139 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Advancing to step 7:
75 goes into 640 8 times with a remainder of 40.
The number 8 becomes the next digit in our result. 
Result so far: 6681.8
Subtracting 600 from 640 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 8:
400 divided by 75 is 5 with a remainder of 25.
Record the quotient 5 as the next digit in the result. 
Result so far: 6681.85
Subtracting 375 from 400 leaves us with 25.
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 9:
75 can be fit into 250 3 times, resulting in a remainder of 25.
Write down 3 as next digit of the result. 
Result so far: 6681.853
If we take 225 away from 250, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 10:
250 divided by 75 is 3 with a remainder of 25.
Write down 3 as next digit of the result. 
Result so far: 6681.8533
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.

The final outcome is 6681.8533, with a leftover of 0.00025.