48512039 ÷ 40 
The aim is to understand the frequency of 40 in 48512039.

Advancing to step 1:
4 divided by 40 is 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Grab the next digit (8) from the dividend, add it to 4, then carry on: 48 / 40

Step 2:
40 goes into 48 1 times with a remainder of 8.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 40 from 48, we get 8.
Grab the next digit (5) from the dividend, add it to 8, then carry on: 85 / 40

Going ahead to step 3:
85 divided by 40 is 2 with a remainder of 5.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
Subtracting 80 from 85 leaves us with 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 40

Step 4:
If we divide 51 by 40, we get 1 and a remainder of 11.
The next digit of our result is 1. 
Result so far: 121.0
Subtracting 40 from 51 leaves us with 11.
Fetch the next digit (2) from the dividend, attach it to 11 and continue: 112 / 40

Let's proceed to step 5:
When dividing 112 by 40, we get 2 with a remainder of 32.
Put 2 as the next digit of the answer. 
Result so far: 1212.0
If we subtract 80 from 112, we get 32.
Append the next digit (0) from the dividend to 32 and continue with: 320 / 40

Moving on to step 6:
The number 40 fits into 320 8 times, leaving a remainder of 0.
Record the quotient 8 as the next digit in the result. 
Result so far: 12128.0
Deduct 320 from 320 and we're left with 0.
Bring next digit (3) of the dividend behind the 0 and repeat the process: 3 / 40

Step 7:
The number 40 fits into 3 0 times, leaving a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 121280.0
Subtract 0 from 3 to get 3.
Include the next digit (9) from the dividend after 3, then repeat: 39 / 40

Advancing to step 8:
When dividing 39 by 40, we get 0 with a remainder of 39.
The number 0 becomes the next digit in our result. 
Result so far: 1212800.0
Subtract 0 from 39 to get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Going ahead to step 9:
If we divide 390 by 40, we get 9 and a remainder of 30.
Put 9 as the next digit of the answer. 
Result so far: 1212800.9
Deduct 360 from 390 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 10:
40 can be fit into 300 7 times, resulting in a remainder of 20.
The number 7 becomes the next digit in our result. 
Result so far: 1212800.97
Subtracting 280 from 300 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 11:
When dividing 200 by 40, we get 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 1212800.975
Subtract 200 from 200 to 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.

Moving on to step 12:
If we divide 0 by 40, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 1212800.975
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.

On to step 13:
When dividing 0 by 40, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 1212800.975
If we subtract 0 from 0, 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.

The quotient of the division is 1212800.975, and the remainder is 0.0.