What is the solution of the equation 6x-3.8=30.4.
方程6x-3.8=30.4的解是多少．
<gadget id="calculator">30.4 + 3.8</gadget>
<output>34.2</output>

<gadget id="calculator">34.2 / 6</gadget>
<output>5.7</output>

<result>5.7</result>