(2/3) of the number A is equal to 40% of the number B, and (1/2) of the number A is 45. What is the number B?
甲数的(2/3)等于乙数的40%，甲数的(1/2)是45，乙数是多少？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">45 / (1/2)</gadget>
<output>90</output>

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

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(2/3) / (2/5)</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">90 * (5/3)</gadget>
<output>150</output>

<result>150</result>