Mom's mobile phone bill is 20 cents per minute, and now there is 1 yuan and 60 cents left on her mobile phone bill, how many minutes is enough for calling?
妈妈的手机话费是每分钟两角，现在妈妈的手机话费还剩1元6角，够打几分钟？
<gadget id="calculator">6 / 10</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 + (3/5)</gadget>
<output>8/5 = around 1.6</output>

<gadget id="calculator">(8/5) / 0.2</gadget>
<output>8</output>

<result>8</result>