A bag of rice is used for the first time (1/10), and the rest (1/3) is used for the second time. What fraction of the original rice is left?
一袋大米，第一次用去(1/10)，第二次用去余下的(1/3)，这时还余下原有大米的几分之几？
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(9/10) * (2/3)</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>