1.2 plus the product of 1.8 and 4, divided by 0.4, what is the quotient?
1.2加上1.8与4的积，除以0.4，商是多么？
<gadget id="calculator">1.8 * 4</gadget>
<output>7.2</output>

<gadget id="calculator">1.2 + 7.2</gadget>
<output>8.4</output>

<gadget id="calculator">8.4 / 0.4</gadget>
<output>21</output>

<result>21</result>