A is 100, B is A's (1/4), ask B.
甲是100，乙是甲的(1/4)，求乙．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">100 * (1/4)</gadget>
<output>25</output>

<result>25</result>