Put 10 coins of 5 cents, 2 cents and 1 cent each into the bag and touch 5 coins at will. How many yuan can you touch at most?
把5角、2角、1角的钱币各10张放入袋子里任意摸5张，最多能摸到多少元．
<gadget id="calculator">5 / 10</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">5 * (1/2)</gadget>
<output>5/2 = around 2.5</output>

<result>5/2 = around 2.5</result>