If a*b=13*ab/8 is stipulated, what is the final result of 17*24?
如果规定a※b=13*a-b/8，那么17※24的最后结果是多少．
<gadget id="calculator">13 * 17</gadget>
<output>221</output>

<gadget id="calculator">24 / 8</gadget>
<output>3</output>

<gadget id="calculator">221 - 3</gadget>
<output>218</output>

<result>218</result>