We look at the division of 663501 by 74 
The aim is to understand the frequency of 74 in 663501.

Advancing to step 1:
If we divide 6 by 74, we get 0 and a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 74

On to step 2:
74 can be fit into 66 0 times, resulting in a remainder of 66.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 66 after subtracting 0 from 66.
Fetch the next digit (3) from the dividend, attach it to 66 and continue: 663 / 74

Going ahead to step 3:
74 can be fit into 663 8 times, resulting in a remainder of 71.
Use 8 as the next digit of our solution. 
Result so far: 8.0
The remainder is 71 after subtracting 592 from 663.
Append the next digit (5) from the dividend to 71 and continue with: 715 / 74

Step 4:
74 can be fit into 715 9 times, resulting in a remainder of 49.
Use 9 as the next digit of our solution. 
Result so far: 89.0
Subtract 666 from 715 to get 49.
Fetch the next digit (0) from the dividend, attach it to 49 and continue: 490 / 74

On to step 5:
74 can be fit into 490 6 times, resulting in a remainder of 46.
Record the quotient 6 as the next digit in the result. 
Result so far: 896.0
Deduct 444 from 490 and we're left with 46.
Grab the next digit (1) from the dividend, add it to 46, then carry on: 461 / 74

Going ahead to step 6:
When dividing 461 by 74, we get 6 with a remainder of 17.
The number 6 becomes the next digit in our result. 
Result so far: 8966.0
Subtract 444 from 461 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 7:
170 divided by 74 is 2 with a remainder of 22.
Use 2 as the next digit of our solution. 
Result so far: 8966.2
The remainder is 22 after subtracting 148 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 8:
If we divide 220 by 74, we get 2 and a remainder of 72.
Record the quotient 2 as the next digit in the result. 
Result so far: 8966.22
If we take 148 away from 220, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

The quotient of the division is 8966.22, and the remainder is 0.072.