A batch of fruits, among which (1/10) are bananas, (1/5) are pears, and (7/20) are apples, how much do these three kinds of fruits account for in the total number of fruits shipped?
一批水果，其中(1/10)是香蕉，(1/5)是梨，(7/20)是苹果，这三种水果占运来水果总数的几分这几？
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

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

<gadget id="calculator">7 / 20</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">(1/10) + (1/5) + (7/20)</gadget>
<output>13/20 = around 0.65</output>

<result>13/20 = around 0.65</result>