The number of A is 5 times the number of B, how much more is the number of A than the number of B
甲数是乙数的5倍，甲数比乙数多多少
<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">4 / 1</gadget>
<output>4</output>

<result>4</result>