A bag of rice is 160 kilograms, if (1/2) is used for the first time, and the rest (1/4) is used for the second time, how many kilograms are left?
一袋大米160千克，第一次用去(1/2)，第二次用去余下的(1/4)，还剩余多少千克？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">160 * (1/2)</gadget>
<output>80</output>

<gadget id="calculator">160 - 80</gadget>
<output>80</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">80 * (1/4)</gadget>
<output>20</output>

<gadget id="calculator">160 - 80 - 20</gadget>
<output>60</output>

<result>60</result>