A class of fifth grade planted 45 trees, 5 more than the total number of trees planted in the whole grade (2/7). How many trees were planted in the whole grade?
五年级一班植树45棵，比全年级植树总棵数的(2/7)多5棵，全年级共植树多少棵？
<gadget id="calculator">45 - 5</gadget>
<output>40</output>

<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">40 / (2/7)</gadget>
<output>140</output>

<result>140</result>