661677 ÷ 67 
The aim is to understand the frequency of 67 in 661677.

On to step 1:
67 can be fit into 6 0 times, resulting in a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 67

Going ahead to step 2:
66 divided by 67 is 0 with a remainder of 66.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 66 after subtracting 0 from 66.
Include the next digit (1) from the dividend after 66, then repeat: 661 / 67

Going ahead to step 3:
67 goes into 661 9 times with a remainder of 58.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Deduct 603 from 661 and we're left with 58.
Fetch the next digit (6) from the dividend, attach it to 58 and continue: 586 / 67

On to step 4:
If we divide 586 by 67, we get 8 and a remainder of 50.
Put 8 as the next digit of the answer. 
Result so far: 98.0
The remainder is 50 after subtracting 536 from 586.
Append the next digit (7) from the dividend to 50 and continue with: 507 / 67

Advancing to step 5:
The number 67 fits into 507 7 times, leaving a remainder of 38.
The next digit of our result is 7. 
Result so far: 987.0
Subtract 469 from 507 to get 38.
Include the next digit (7) from the dividend after 38, then repeat: 387 / 67

Advancing to step 6:
67 can be fit into 387 5 times, resulting in a remainder of 52.
Use 5 as the next digit of our solution. 
Result so far: 9875.0
The remainder is 52 after subtracting 335 from 387.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Let's proceed to step 7:
When dividing 520 by 67, we get 7 with a remainder of 51.
Use 7 as the next digit of our solution. 
Result so far: 9875.7
The remainder is 51 after subtracting 469 from 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Advancing to step 8:
The number 67 fits into 510 7 times, leaving a remainder of 41.
Write down 7 as next digit of the result. 
Result so far: 9875.77
The remainder is 41 after subtracting 469 from 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

The final result is 9875.77 with a remainder of 0.041.