If you meant 495.382 then:
The greatest place is the hundreds place here.
The next digit over from the 4 is 9, which is greater than or equal to 5, so the 4 rounds up.
Answer: 500
.
If you meant 495,382 then:
The greatest place is the hundred thousands place here.
The next digit over from the 4 is 9, which is greater than or equal to 5, so the 4 rounds up.
Answer: 500,000