We look at the division of 374004 by 77 
The aim is to understand the frequency of 77 in 374004.

Step 1:
If we divide 3 by 77, we get 0 and a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Append the next digit (7) from the dividend to 3 and continue with: 37 / 77

Step 2:
If we divide 37 by 77, we get 0 and a remainder of 37.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 37 after subtracting 0 from 37.
Append the next digit (4) from the dividend to 37 and continue with: 374 / 77

Let's proceed to step 3:
If we divide 374 by 77, we get 4 and a remainder of 66.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we take 308 away from 374, we end up with 66.
Take the next digit (0) from the dividend and append it to 66, then repeat: 660 / 77

On to step 4:
77 goes into 660 8 times with a remainder of 44.
The next digit of our result is 8. 
Result so far: 48.0
The remainder is 44 after subtracting 616 from 660.
Append the next digit (0) from the dividend to 44 and continue with: 440 / 77

Moving on to step 5:
If we divide 440 by 77, we get 5 and a remainder of 55.
Put 5 as the next digit of the answer. 
Result so far: 485.0
If we take 385 away from 440, we end up with 55.
Include the next digit (4) from the dividend after 55, then repeat: 554 / 77

Going ahead to step 6:
77 goes into 554 7 times with a remainder of 15.
Use 7 as the next digit of our solution. 
Result so far: 4857.0
The remainder is 15 after subtracting 539 from 554.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 7:
The number 77 fits into 150 1 times, leaving a remainder of 73.
Record the quotient 1 as the next digit in the result. 
Result so far: 4857.1
Subtracting 77 from 150 leaves us with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Moving on to step 8:
When dividing 730 by 77, we get 9 with a remainder of 37.
The number 9 becomes the next digit in our result. 
Result so far: 4857.19
If we subtract 693 from 730, we get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Advancing to step 9:
370 divided by 77 is 4 with a remainder of 62.
The next digit of our result is 4. 
Result so far: 4857.194
Deduct 308 from 370 and we're left with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Step 10:
The number 77 fits into 620 8 times, leaving a remainder of 4.
Write down 8 as next digit of the result. 
Result so far: 4857.1948
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.

Advancing to step 11:
The number 77 fits into 40 0 times, leaving a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 4857.1948
If we take 0 away from 40, we end up 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.

Step 12:
When dividing 400 by 77, we get 5 with a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 4857.194805
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.

Advancing to step 13:
150 divided by 77 is 1 with a remainder of 73.
The number 1 becomes the next digit in our result. 
Result so far: 4857.1948051
Subtracting 77 from 150 leaves us with 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 14:
730 divided by 77 is 9 with a remainder of 37.
Use 9 as the next digit of our solution. 
Result so far: 4857.19480519
The remainder is 37 after subtracting 693 from 730.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

The final outcome is 4857.19480519, with a leftover of 3.7e-08.