Divide number A by number B, the quotient and remainder are both 15, what is the smallest number A?
甲数除以乙数，所得的商和余数都是15，甲数最小是多少．
<gadget id="calculator">15 + 1</gadget>
<output>16</output>

<gadget id="calculator">16 * 15</gadget>
<output>240</output>

<gadget id="calculator">240 + 15</gadget>
<output>255</output>

<result>255</result>