The number of pears is (3/4) that of apples, and the number of oranges is 1 (2/3) times that of pears. There are 90 oranges and apples. How many pears are there?
梨的个数是苹果的(3/4)，橘子的个数是梨的1(2/3)倍，橘子和苹果共有90个，梨有多少个？
<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">1 + (5/4)</gadget>
<output>9/4 = around 2.25</output>

<gadget id="calculator">90 / (9/4)</gadget>
<output>40</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">40 * (3/4)</gadget>
<output>30</output>

<result>30</result>