The Greening School of Experimental Primary School bought a batch of saplings, planted 25% of them on the first day, planted 36 trees on the second day, and left 54 trees unplanted. How many trees were bought in total?
实验小学绿化学校买了一批树苗，第一天栽了25%，第二天栽了36棵，还剩54棵没栽，一共买来多少棵树？
<gadget id="calculator">36 + 54</gadget>
<output>90</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">90 / (3/4)</gadget>
<output>120</output>

<result>120</result>