712498 ÷ 45 
The aim is to understand the frequency of 45 in 712498.

Going ahead to step 1:
When dividing 7 by 45, we get 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Fetch the next digit (1) from the dividend, attach it to 7 and continue: 71 / 45

On to step 2:
If we divide 71 by 45, we get 1 and a remainder of 26.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 45 from 71 to get 26.
Include the next digit (2) from the dividend after 26, then repeat: 262 / 45

Let's proceed to step 3:
45 goes into 262 5 times with a remainder of 37.
Use 5 as the next digit of our solution. 
Result so far: 15.0
If we take 225 away from 262, we end up with 37.
Grab the next digit (4) from the dividend, add it to 37, then carry on: 374 / 45

On to step 4:
When dividing 374 by 45, we get 8 with a remainder of 14.
Put 8 as the next digit of the answer. 
Result so far: 158.0
If we subtract 360 from 374, we get 14.
Grab the next digit (9) from the dividend, add it to 14, then carry on: 149 / 45

Advancing to step 5:
If we divide 149 by 45, we get 3 and a remainder of 14.
Use 3 as the next digit of our solution. 
Result so far: 1583.0
Subtract 135 from 149 to get 14.
Include the next digit (8) from the dividend after 14, then repeat: 148 / 45

Let's proceed to step 6:
If we divide 148 by 45, we get 3 and a remainder of 13.
Write down 3 as next digit of the result. 
Result so far: 15833.0
If we subtract 135 from 148, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 7:
The number 45 fits into 130 2 times, leaving a remainder of 40.
Put 2 as the next digit of the answer. 
Result so far: 15833.2
The remainder is 40 after subtracting 90 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 8:
When dividing 400 by 45, we get 8 with a remainder of 40.
The number 8 becomes the next digit in our result. 
Result so far: 15833.28
Subtracting 360 from 400 leaves us 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.

Moving on to step 9:
The number 45 fits into 400 8 times, leaving a remainder of 40.
Record the quotient 8 as the next digit in the result. 
Result so far: 15833.288
If we subtract 360 from 400, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The final outcome is 15833.288, with a leftover of 0.004.