It is known that △+△+△=105, □+○*△=356, (△+△)/○=7. Seek □=?
已知△+△+△=105，□+○*△=356，(△+△)/○=7．求□=？
<gadget id="calculator">10 * 35</gadget>
<output>350</output>

<gadget id="calculator">356 - 350</gadget>
<output>6</output>

<result>6</result>