78.5 plus 3 times x equals 150.8. (solution by equation)
78.5加上x的3倍等于150.8．(用方程解)
<gadget id="calculator">150.8 - 78.5</gadget>
<output>72.3</output>

<gadget id="calculator">72.3 / 3</gadget>
<output>24.1</output>

<result>24.1</result>