There are several weights with masses of 11g and 17g respectively, how many such weights are required to weigh an object with mass of 3g on the balance.
现有质量分别为11g和17g的砝码若干个，在天平上要称出质量为3g的物体，则至少需要用多少个这样的砝码．
<gadget id="calculator">5 + 8</gadget>
<output>13</output>

<result>13</result>