It is now 6:10, how much later, the hour and minute hands will coincide.
现在是6点10分，再过多少，时针与分针将重合．
<gadget id="calculator">30 * 4</gadget>
<output>120</output>

<gadget id="calculator">0.5 * 10</gadget>
<output>5</output>

<gadget id="calculator">120 + 5</gadget>
<output>125</output>

<gadget id="calculator">6 - 0.5</gadget>
<output>5.5</output>

<gadget id="calculator">125 / 5.5</gadget>
<output>22.727273</output>

<result>22.727273</result>