The number 36 less than 45% of a number is 54. What is this number?
比一个数的45%少36的数是54，这个数是多少？
<gadget id="calculator">54 + 36</gadget>
<output>90</output>

<gadget id="calculator">45 / 100</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">90 / (9/20)</gadget>
<output>200</output>

<result>200</result>