The first group planted 10 trees, among which Honghong planted 3 trees and Mingming planted 4 trees. Honghong and Mingming planted these trees together ((())/(())).
第一小组种了10棵树，其中，红红种了3棵，明明种了4棵．红红和明明一共种了这些树的((())/(()))．
<gadget id="calculator">3 + 4</gadget>
<output>7</output>

<gadget id="calculator">7 / 10</gadget>
<output>7/10 = around 0.7</output>

<result>7/10 = around 0.7</result>