The number (1/2) of A is 30, the number of B is 100 (3/4), and B is the number of A.
甲数的(1/2)是30，乙数是100的(3/4)，乙是甲的多少．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">100 * (3/4)</gadget>
<output>75</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">30 / (1/2)</gadget>
<output>60</output>

<gadget id="calculator">75 / 60</gadget>
<output>5/4 = around 1.25</output>

<result>5/4 = around 1.25</result>