Calculate with a simple method: 3.85*42+385*0.63-38.5*0.5.
用简便方法计算：3.85*42+385*0.63-38.5*0.5．
<gadget id="calculator">3.85 * 42</gadget>
<output>161.7</output>

<gadget id="calculator">385 * 0.63</gadget>
<output>242.55</output>

<gadget id="calculator">38.5 * 0.5</gadget>
<output>19.25</output>

<gadget id="calculator">242.55 - 19.25</gadget>
<output>223.3</output>

<gadget id="calculator">161.7 + 223.3</gadget>
<output>385</output>

<result>385</result>