There are 140 kilograms of apples in the store, twice as many pears as apples, and 4 times as many pears as grapes. How many kilograms are there grapes?
商店有苹果140千克，梨子是苹果的2倍，梨子是葡萄的4倍，有葡萄多少千克？
<gadget id="calculator">2 / 4</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">140 * (1/2)</gadget>
<output>70</output>

<result>70</result>