485872 ÷ 40 
The aim is to understand the frequency of 40 in 485872.

Going ahead to step 1:
40 can be fit into 4 0 times, resulting in a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Fetch the next digit (8) from the dividend, attach it to 4 and continue: 48 / 40

On to step 2:
When dividing 48 by 40, we get 1 with a remainder of 8.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 40 from 48 and we're left with 8.
Include the next digit (5) from the dividend after 8, then repeat: 85 / 40

Going ahead to step 3:
If we divide 85 by 40, we get 2 and a remainder of 5.
Write down 2 as next digit of the result. 
Result so far: 12.0
Deduct 80 from 85 and we're left with 5.
Fetch the next digit (8) from the dividend, attach it to 5 and continue: 58 / 40

Let's proceed to step 4:
When dividing 58 by 40, we get 1 with a remainder of 18.
Write down 1 as next digit of the result. 
Result so far: 121.0
The remainder is 18 after subtracting 40 from 58.
Grab the next digit (7) from the dividend, add it to 18, then carry on: 187 / 40

Advancing to step 5:
The number 40 fits into 187 4 times, leaving a remainder of 27.
Put 4 as the next digit of the answer. 
Result so far: 1214.0
The remainder is 27 after subtracting 160 from 187.
Append the next digit (2) from the dividend to 27 and continue with: 272 / 40

Moving on to step 6:
40 can be fit into 272 6 times, resulting in a remainder of 32.
Use 6 as the next digit of our solution. 
Result so far: 12146.0
If we take 240 away from 272, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 7:
The number 40 fits into 320 8 times, leaving a remainder of 0.
Put 8 as the next digit of the answer. 
Result so far: 12146.8
If we subtract 320 from 320, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
The number 40 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 12146.8
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 9:
When dividing 0 by 40, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 12146.8
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 12146.8 with a remaining 0.0.