We're dividing 488420 by 77 
The aim is to understand the frequency of 77 in 488420.

Let's proceed to step 1:
The number 77 fits into 4 0 times, leaving a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Fetch the next digit (8) from the dividend, attach it to 4 and continue: 48 / 77

Let's proceed to step 2:
If we divide 48 by 77, we get 0 and a remainder of 48.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 48 and we're left with 48.
Grab the next digit (8) from the dividend, add it to 48, then carry on: 488 / 77

Moving on to step 3:
77 goes into 488 6 times with a remainder of 26.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Deduct 462 from 488 and we're left with 26.
Take the next digit (4) from the dividend and append it to 26, then repeat: 264 / 77

Step 4:
77 goes into 264 3 times with a remainder of 33.
The number 3 becomes the next digit in our result. 
Result so far: 63.0
Subtract 231 from 264 to get 33.
Include the next digit (2) from the dividend after 33, then repeat: 332 / 77

Let's proceed to step 5:
332 divided by 77 is 4 with a remainder of 24.
Put 4 as the next digit of the answer. 
Result so far: 634.0
If we subtract 308 from 332, we get 24.
Fetch the next digit (0) from the dividend, attach it to 24 and continue: 240 / 77

Going ahead to step 6:
The number 77 fits into 240 3 times, leaving a remainder of 9.
Write down 3 as next digit of the result. 
Result so far: 6343.0
If we take 231 away from 240, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 7:
90 divided by 77 is 1 with a remainder of 13.
The next digit of our result is 1. 
Result so far: 6343.1
Deduct 77 from 90 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 8:
When dividing 130 by 77, we get 1 with a remainder of 53.
Record the quotient 1 as the next digit in the result. 
Result so far: 6343.11
If we take 77 away from 130, 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.

After the division, we end up with 6343.11 and a remainder of 0.053.