366120 ÷ 77 
The aim is to understand the frequency of 77 in 366120.

Going ahead to step 1:
When dividing 3 by 77, we get 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Append the next digit (6) from the dividend to 3 and continue with: 36 / 77

Moving on to step 2:
77 can be fit into 36 0 times, resulting in a remainder of 36.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 36 and we're left with 36.
Grab the next digit (6) from the dividend, add it to 36, then carry on: 366 / 77

On to step 3:
77 can be fit into 366 4 times, resulting in a remainder of 58.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we subtract 308 from 366, we get 58.
Take the next digit (1) from the dividend and append it to 58, then repeat: 581 / 77

Let's proceed to step 4:
If we divide 581 by 77, we get 7 and a remainder of 42.
The next digit of our result is 7. 
Result so far: 47.0
If we take 539 away from 581, we end up with 42.
Bring next digit (2) of the dividend behind the 42 and repeat the process: 422 / 77

On to step 5:
The number 77 fits into 422 5 times, leaving a remainder of 37.
The number 5 becomes the next digit in our result. 
Result so far: 475.0
Deduct 385 from 422 and we're left with 37.
Bring next digit (0) of the dividend behind the 37 and repeat the process: 370 / 77

Moving on to step 6:
The number 77 fits into 370 4 times, leaving a remainder of 62.
Write down 4 as next digit of the result. 
Result so far: 4754.0
The remainder is 62 after subtracting 308 from 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Moving on to step 7:
When dividing 620 by 77, we get 8 with a remainder of 4.
The next digit of our result is 8. 
Result so far: 4754.8
Subtract 616 from 620 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 8:
40 divided by 77 is 0 with a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 4754.8
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 9:
When dividing 400 by 77, we get 5 with a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 4754.805
Deduct 385 from 400 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 10:
150 divided by 77 is 1 with a remainder of 73.
The next digit of our result is 1. 
Result so far: 4754.8051
If we subtract 77 from 150, we get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

On to step 11:
If we divide 730 by 77, we get 9 and a remainder of 37.
The number 9 becomes the next digit in our result. 
Result so far: 4754.80519
Deduct 693 from 730 and we're left with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Going ahead to step 12:
370 divided by 77 is 4 with a remainder of 62.
Use 4 as the next digit of our solution. 
Result so far: 4754.805194
The remainder is 62 after subtracting 308 from 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

On to step 13:
620 divided by 77 is 8 with a remainder of 4.
Put 8 as the next digit of the answer. 
Result so far: 4754.8051948
If we subtract 616 from 620, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 14:
When dividing 40 by 77, we get 0 with a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 4754.8051948
Subtracting 0 from 40 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.

The final outcome is 4754.8051948, with a leftover of 4e-08.