We're dividing 287500 by 77 
The aim is to understand the frequency of 77 in 287500.

On to step 1:
If we divide 2 by 77, we get 0 and a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Grab the next digit (8) from the dividend, add it to 2, then carry on: 28 / 77

Moving on to step 2:
28 divided by 77 is 0 with a remainder of 28.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 28 to get 28.
Include the next digit (7) from the dividend after 28, then repeat: 287 / 77

Moving on to step 3:
The number 77 fits into 287 3 times, leaving a remainder of 56.
Use 3 as the next digit of our solution. 
Result so far: 3.0
The remainder is 56 after subtracting 231 from 287.
Grab the next digit (5) from the dividend, add it to 56, then carry on: 565 / 77

On to step 4:
77 goes into 565 7 times with a remainder of 26.
Use 7 as the next digit of our solution. 
Result so far: 37.0
If we subtract 539 from 565, we get 26.
Take the next digit (0) from the dividend and append it to 26, then repeat: 260 / 77

Moving on to step 5:
77 goes into 260 3 times with a remainder of 29.
Record the quotient 3 as the next digit in the result. 
Result so far: 373.0
If we subtract 231 from 260, we get 29.
Include the next digit (0) from the dividend after 29, then repeat: 290 / 77

Moving on to step 6:
77 goes into 290 3 times with a remainder of 59.
Use 3 as the next digit of our solution. 
Result so far: 3733.0
Subtracting 231 from 290 leaves us with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Advancing to step 7:
When dividing 590 by 77, we get 7 with a remainder of 51.
The number 7 becomes the next digit in our result. 
Result so far: 3733.7
Deduct 539 from 590 and we're left with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Step 8:
77 goes into 510 6 times with a remainder of 48.
Write down 6 as next digit of the result. 
Result so far: 3733.76
Subtract 462 from 510 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 9:
480 divided by 77 is 6 with a remainder of 18.
Use 6 as the next digit of our solution. 
Result so far: 3733.766
Deduct 462 from 480 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

In conclusion, the division gives 3733.766 with a balance of 0.0018.