If anyone could help me see where I'm messing up, I'd greatly appreciate it. Thank you.

Determine the empirical formula for compouds that have the following analyses:

60.9% As and 31.9% S

I have the answer key for this problem, I just have to show the correct work to get to there. The problem is, I do the problem, but don't come up with the correct answer.

60.9 g As (1 mol) = .813 = 1

74.92 .813

39.1 g S (1 mol) = 1.220= 2

32.06 .813

*Note when I used the numbers 1.220 and .833 I didn't round them off there. I punched the full answers in my calculator, but for writing purposes I just wrote them down as .833, etc.

I end up getting as my final answer: AsS_{2}

when the answer should be: As_{2}S_{3}.

If anyone can tell me where I'm off, I'd appreciate it a lot. Thanks.