There are 210 ginkgo trees planted around the square, and the banyan tree is a ginkgo tree (5/7). How many banyan trees are planted around the square?
广场四周种有银杏树210棵，榕树是银杏树的(5/7)．广场四周种榕树多少棵？
<gadget id="calculator">5 / 7</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">210 * (5/7)</gadget>
<output>150</output>

<result>150</result>