We look at the division of 65377890 by 753 
The aim is to understand the frequency of 753 in 65377890.

Advancing to step 1:
The number 753 fits into 6 0 times, leaving a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Include the next digit (5) from the dividend after 6, then repeat: 65 / 753

Moving on to step 2:
753 goes into 65 0 times with a remainder of 65.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 65, we end up with 65.
Append the next digit (3) from the dividend to 65 and continue with: 653 / 753

On to step 3:
If we divide 653 by 753, we get 0 and a remainder of 653.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 653 after subtracting 0 from 653.
Append the next digit (7) from the dividend to 653 and continue with: 6537 / 753

Let's proceed to step 4:
6537 divided by 753 is 8 with a remainder of 513.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
The remainder is 513 after subtracting 6024 from 6537.
Append the next digit (7) from the dividend to 513 and continue with: 5137 / 753

Let's proceed to step 5:
753 goes into 5137 6 times with a remainder of 619.
Put 6 as the next digit of the answer. 
Result so far: 86.0
Subtracting 4518 from 5137 leaves us with 619.
Grab the next digit (8) from the dividend, add it to 619, then carry on: 6198 / 753

Going ahead to step 6:
753 can be fit into 6198 8 times, resulting in a remainder of 174.
Write down 8 as next digit of the result. 
Result so far: 868.0
If we subtract 6024 from 6198, we get 174.
Grab the next digit (9) from the dividend, add it to 174, then carry on: 1749 / 753

Step 7:
When dividing 1749 by 753, we get 2 with a remainder of 243.
Use 2 as the next digit of our solution. 
Result so far: 8682.0
If we take 1506 away from 1749, we end up with 243.
Fetch the next digit (0) from the dividend, attach it to 243 and continue: 2430 / 753

Step 8:
753 can be fit into 2430 3 times, resulting in a remainder of 171.
The number 3 becomes the next digit in our result. 
Result so far: 86823.0
Subtract 2259 from 2430 to get 171.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1710, and continue the process.

Step 9:
When dividing 1710 by 753, we get 2 with a remainder of 204.
Write down 2 as next digit of the result. 
Result so far: 86823.2
Deduct 1506 from 1710 and we're left with 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

On to step 10:
If we divide 2040 by 753, we get 2 and a remainder of 534.
The number 2 becomes the next digit in our result. 
Result so far: 86823.22
Subtracting 1506 from 2040 leaves us with 534.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5340, and continue the process.

The final outcome is 86823.22, with a leftover of 0.534.