If the number of books stored by A is three times the number of books stored by B, how much is the number of books stored by B equal to the number of books stored by A?
如果甲存书的本数是乙存书本数的3倍，那么乙存书的本数是甲存书的多少
<gadget id="calculator">1 * 3</gadget>
<output>3</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<result>1/3 = around 0.333333</result>