The mall bought 20 boxes of bananas, and the number of boxes of oranges was 4/5 of the number of bananas. How many boxes of bananas and oranges did the mall buy?
商场购进20箱香蕉，购进橘子的箱数是香蕉箱数的(4/5)，商场购进了香蕉和橘子一共多少箱？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">20 * (4/5)</gadget>
<output>16</output>

<gadget id="calculator">16 + 20</gadget>
<output>36</output>

<result>36</result>