The food factory produces 3500 ham cakes, the number of fruit cakes is more than ham cakes (1/7), how many more fruit cakes than ham cakes?
食品厂生产火腿饼3500个，水果饼的数量比火腿饼多(1/7)，水果饼比火腿饼多多少个？
<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">3_500 * (1/7)</gadget>
<output>500</output>

<result>500</result>