We divide 288129 by 40
We want to figure out the number of times 288129 can be divided by 40.

Moving on to step 1:
2 divided by 40 is 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Bring next digit (8) of the dividend behind the 2 and repeat the process: 28 / 40

Step 2:
If we divide 28 by 40, we get 0 and a remainder of 28.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 28 leaves us with 28.
Grab the next digit (8) from the dividend, add it to 28, then carry on: 288 / 40

Moving on to step 3:
If we divide 288 by 40, we get 7 and a remainder of 8.
The next digit of our result is 7. 
Result so far: 7.0
Deduct 280 from 288 and we're left with 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 40

Step 4:
When dividing 81 by 40, we get 2 with a remainder of 1.
Record the quotient 2 as the next digit in the result. 
Result so far: 72.0
If we take 80 away from 81, we end up with 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 40

Step 5:
12 divided by 40 is 0 with a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 720.0
The remainder is 12 after subtracting 0 from 12.
Include the next digit (9) from the dividend after 12, then repeat: 129 / 40

Moving on to step 6:
129 divided by 40 is 3 with a remainder of 9.
The next digit of our result is 3. 
Result so far: 7203.0
Subtract 120 from 129 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 7:
40 goes into 90 2 times with a remainder of 10.
Put 2 as the next digit of the answer. 
Result so far: 7203.2
If we take 80 away from 90, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 8:
When dividing 100 by 40, we get 2 with a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 7203.22
If we subtract 80 from 100, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final result is 7203.22 with a remainder of 0.02.