Calculate with a simple method: 57+57+42*57+57.
用简便方法计算：57+57+42*57+57．
<gadget id="calculator">42 * 57</gadget>
<output>2_394</output>

<gadget id="calculator">57 + 57 + 2_394 + 57</gadget>
<output>2_565</output>

<result>2_565</result>