thirty two thousand and four hundred
32400/1
32400
32400 square feet 32400 square feet
Tens of thousands.
32400
0.30 * 108000 = 32400
32000
540 minutes.
3.24*10^4 = 32400
The question is easily answered using the calculator in your computer. But, since you are obviously not capable of doing so, the answer is 32400.
It is 32400, exactly as in the question. A decimal is a way of representing a number in such a way that the place value of each digit is ten times that of the digit to its right. A decimal representation does not require a decimal point. Adding zeros after the decimal point is wrong because they imply a degree of accuracy (significant figures) for which there is no justification.
Here are the first 10 multiples: 3600, 7200, 10800, 14400, 18000, 21600, 25200, 28800, 32400, 36000 . . .