Xiaolan spends (3/10) hours doing math homework, (1/5) hours doing English homework, and (1/3) hour doing Chinese homework. How many hours did Xiaolan spend doing these three homeworks?
小兰做数学作业用(3/10)小时，做英语作业用(1/5)小时，做语文作业用(1/3)小时，小兰做这三种作业一共用了多少小时？
<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

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

<gadget id="calculator">(3/10) + (1/5) + (1/3)</gadget>
<output>5/6 = around 0.833333</output>

<result>5/6 = around 0.833333</result>