To transport a batch of apples, each basket weighs 15 kg, and 40 baskets are to be packed. If new baskets are used, the weight of apples in each new basket is (4/5) that of the old basket, how many new baskets are needed?
运一批苹果，每筐15千克，要装40个筐．如果改用新筐，每个新筐装苹果的重量是旧筐的(4/5)，需用多少个新筐？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">15 * (4/5)</gadget>
<output>12</output>

<gadget id="calculator">40 / 12</gadget>
<output>10/3 = around 3.333333</output>

<gadget id="calculator">15 * (10/3)</gadget>
<output>50</output>

<result>50</result>