Pine trees are 45 fewer than poplar trees, and the number of poplar trees is more than pine trees (3/7). How many pine trees and poplar trees are there altogether?
松树比杨树少45棵，杨树的棵数比松树多(3/7)，松树和杨树一共有多少棵？
<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>

<gadget id="calculator">45 / (3/7)</gadget>
<output>105</output>

<gadget id="calculator">1 + (3/7)</gadget>
<output>10/7 = around 1.428571</output>

<gadget id="calculator">105 * (10/7)</gadget>
<output>150</output>

<gadget id="calculator">150 + 105</gadget>
<output>255</output>

<result>255</result>