A number (2/3) minus 5 times 4.5, the difference is 18, what is this number? (solution by equation)
一个数的(2/3)减去4.5的5倍，差是18，这个数是多少？(用方程解)
<gadget id="calculator">4.5 * 5</gadget>
<output>22.5</output>

<gadget id="calculator">22.5 + 18</gadget>
<output>40.5</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">40.5 / (2/3)</gadget>
<output>60.75</output>

<result>60.75</result>