An ice cream is 3 yuan and 5 cents, written in decimals: how much.
一只雪糕3元5角，用小数表示写作：多少．
<gadget id="calculator">5 / 10</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">3 + (1/2)</gadget>
<output>7/2 = around 3.5</output>

<result>7/2 = around 3.5</result>