The orchard has a bumper harvest, with 3,500 kilograms of pears, which are apples (5/7). How many kilograms are apples?
果园大丰收，收了梨3500千克，是苹果的(5/7)，苹果多少千克？
<gadget id="calculator">5 / 7</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">3_500 / (5/7)</gadget>
<output>4_900</output>

<result>4_900</result>