Aunt Wang needs 64 shells to make a wind chime, and the number of shells used to make a sailboat is 4 times more than that of a wind chime, which is 17. How many shells does it take to make a sailboat?
王阿姨做一个风铃要用64个贝壳，做一只帆船用的贝壳数比风铃的4倍多17个．做一只帆船要用多少个贝壳？
<gadget id="calculator">64 * 4</gadget>
<output>256</output>

<gadget id="calculator">256 + 17</gadget>
<output>273</output>

<result>273</result>