We're dividing 77489287 by 665 
The aim is to understand the frequency of 665 in 77489287.

On to step 1:
The number 665 fits into 7 0 times, leaving a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Include the next digit (7) from the dividend after 7, then repeat: 77 / 665

Let's proceed to step 2:
When dividing 77 by 665, we get 0 with a remainder of 77.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 77 leaves us with 77.
Grab the next digit (4) from the dividend, add it to 77, then carry on: 774 / 665

Step 3:
If we divide 774 by 665, we get 1 and a remainder of 109.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 665 from 774, we get 109.
Take the next digit (8) from the dividend and append it to 109, then repeat: 1098 / 665

On to step 4:
When dividing 1098 by 665, we get 1 with a remainder of 433.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
Subtract 665 from 1098 to get 433.
Grab the next digit (9) from the dividend, add it to 433, then carry on: 4339 / 665

Step 5:
665 goes into 4339 6 times with a remainder of 349.
Use 6 as the next digit of our solution. 
Result so far: 116.0
Subtract 3990 from 4339 to get 349.
Fetch the next digit (2) from the dividend, attach it to 349 and continue: 3492 / 665

On to step 6:
665 goes into 3492 5 times with a remainder of 167.
Record the quotient 5 as the next digit in the result. 
Result so far: 1165.0
Deduct 3325 from 3492 and we're left with 167.
Fetch the next digit (8) from the dividend, attach it to 167 and continue: 1678 / 665

On to step 7:
When dividing 1678 by 665, we get 2 with a remainder of 348.
Use 2 as the next digit of our solution. 
Result so far: 11652.0
Deduct 1330 from 1678 and we're left with 348.
Grab the next digit (7) from the dividend, add it to 348, then carry on: 3487 / 665

Advancing to step 8:
665 goes into 3487 5 times with a remainder of 162.
Put 5 as the next digit of the answer. 
Result so far: 116525.0
If we take 3325 away from 3487, we end up with 162.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

Going ahead to step 9:
The number 665 fits into 1620 2 times, leaving a remainder of 290.
The number 2 becomes the next digit in our result. 
Result so far: 116525.2
The remainder is 290 after subtracting 1330 from 1620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

On to step 10:
If we divide 2900 by 665, we get 4 and a remainder of 240.
Put 4 as the next digit of the answer. 
Result so far: 116525.24
Deduct 2660 from 2900 and we're left with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Moving on to step 11:
When dividing 2400 by 665, we get 3 with a remainder of 405.
Put 3 as the next digit of the answer. 
Result so far: 116525.243
If we take 1995 away from 2400, we end up with 405.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4050, and continue the process.

Moving on to step 12:
When dividing 4050 by 665, we get 6 with a remainder of 60.
Write down 6 as next digit of the result. 
Result so far: 116525.2436
The remainder is 60 after subtracting 3990 from 4050.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 13:
665 can be fit into 600 0 times, resulting in a remainder of 600.
The next digit of our result is 0. 
Result so far: 116525.2436
Deduct 0 from 600 and we're left with 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

Going ahead to step 14:
If we divide 6000 by 665, we get 9 and a remainder of 15.
Use 9 as the next digit of our solution. 
Result so far: 116525.243609
Subtract 5985 from 6000 to get 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 15:
150 divided by 665 is 0 with a remainder of 150.
The next digit of our result is 0. 
Result so far: 116525.243609
If we take 0 away from 150, we end up with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Let's proceed to step 16:
665 can be fit into 1500 2 times, resulting in a remainder of 170.
Record the quotient 2 as the next digit in the result. 
Result so far: 116525.24360902
If we subtract 1330 from 1500, we get 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

The final result is 116525.24360902 with a remainder of 1.7e-07.