We're dividing 350302 by 77 
The aim is to understand the frequency of 77 in 350302.

Let's proceed to step 1:
When dividing 3 by 77, we get 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Grab the next digit (5) from the dividend, add it to 3, then carry on: 35 / 77

Moving on to step 2:
If we divide 35 by 77, we get 0 and a remainder of 35.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 35 to get 35.
Include the next digit (0) from the dividend after 35, then repeat: 350 / 77

Let's proceed to step 3:
When dividing 350 by 77, we get 4 with a remainder of 42.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtract 308 from 350 to get 42.
Append the next digit (3) from the dividend to 42 and continue with: 423 / 77

Step 4:
77 goes into 423 5 times with a remainder of 38.
The number 5 becomes the next digit in our result. 
Result so far: 45.0
Subtracting 385 from 423 leaves us with 38.
Append the next digit (0) from the dividend to 38 and continue with: 380 / 77

On to step 5:
If we divide 380 by 77, we get 4 and a remainder of 72.
Write down 4 as next digit of the result. 
Result so far: 454.0
Subtract 308 from 380 to get 72.
Take the next digit (2) from the dividend and append it to 72, then repeat: 722 / 77

Moving on to step 6:
722 divided by 77 is 9 with a remainder of 29.
Write down 9 as next digit of the result. 
Result so far: 4549.0
If we subtract 693 from 722, we get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Going ahead to step 7:
77 goes into 290 3 times with a remainder of 59.
The number 3 becomes the next digit in our result. 
Result so far: 4549.3
Subtract 231 from 290 to get 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 8:
When dividing 590 by 77, we get 7 with a remainder of 51.
Record the quotient 7 as the next digit in the result. 
Result so far: 4549.37
The remainder is 51 after subtracting 539 from 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Going ahead to step 9:
When dividing 510 by 77, we get 6 with a remainder of 48.
Write down 6 as next digit of the result. 
Result so far: 4549.376
Deduct 462 from 510 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 10:
If we divide 480 by 77, we get 6 and a remainder of 18.
Put 6 as the next digit of the answer. 
Result so far: 4549.3766
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.

The final outcome is 4549.3766, with a leftover of 0.00018.