215933 ÷ 77 
The aim is to understand the frequency of 77 in 215933.

Going ahead to step 1:
77 goes into 2 0 times with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 77

On to step 2:
21 divided by 77 is 0 with a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Take the next digit (5) from the dividend and append it to 21, then repeat: 215 / 77

Advancing to step 3:
77 goes into 215 2 times with a remainder of 61.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtract 154 from 215 to get 61.
Include the next digit (9) from the dividend after 61, then repeat: 619 / 77

Advancing to step 4:
When dividing 619 by 77, we get 8 with a remainder of 3.
The next digit of our result is 8. 
Result so far: 28.0
If we subtract 616 from 619, we get 3.
Bring next digit (3) of the dividend behind the 3 and repeat the process: 33 / 77

Advancing to step 5:
77 can be fit into 33 0 times, resulting in a remainder of 33.
The next digit of our result is 0. 
Result so far: 280.0
Deduct 0 from 33 and we're left with 33.
Append the next digit (3) from the dividend to 33 and continue with: 333 / 77

Going ahead to step 6:
77 can be fit into 333 4 times, resulting in a remainder of 25.
The next digit of our result is 4. 
Result so far: 2804.0
Subtracting 308 from 333 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.

On to step 7:
If we divide 250 by 77, we get 3 and a remainder of 19.
Record the quotient 3 as the next digit in the result. 
Result so far: 2804.3
If we take 231 away from 250, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Moving on to step 8:
The number 77 fits into 190 2 times, leaving a remainder of 36.
The number 2 becomes the next digit in our result. 
Result so far: 2804.32
Subtracting 154 from 190 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 9:
If we divide 360 by 77, we get 4 and a remainder of 52.
Put 4 as the next digit of the answer. 
Result so far: 2804.324
Subtracting 308 from 360 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Going ahead to step 10:
When dividing 520 by 77, we get 6 with a remainder of 58.
The number 6 becomes the next digit in our result. 
Result so far: 2804.3246
The remainder is 58 after subtracting 462 from 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Let's proceed to step 11:
580 divided by 77 is 7 with a remainder of 41.
The number 7 becomes the next digit in our result. 
Result so far: 2804.32467
The remainder is 41 after subtracting 539 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Moving on to step 12:
77 can be fit into 410 5 times, resulting in a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 2804.324675
Subtracting 385 from 410 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 13:
77 goes into 250 3 times with a remainder of 19.
Put 3 as the next digit of the answer. 
Result so far: 2804.3246753
If we subtract 231 from 250, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 14:
The number 77 fits into 190 2 times, leaving a remainder of 36.
The next digit of our result is 2. 
Result so far: 2804.32467532
Deduct 154 from 190 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

The final outcome is 2804.32467532, with a leftover of 3.6e-08.