A number is composed of 5 tens and 10 percent, how much is this number written.
一个数由5个十和10个百分之一组成，这个数写作多少．
<gadget id="calculator">10 * 0.01</gadget>
<output>0.1</output>

<gadget id="calculator">50 + 0.1</gadget>
<output>50.1</output>

<result>50.1</result>