Column formula calculation: 3 times a certain number, minus 0.1, the difference is 0.38, find this number. (solution by equation)
列式计算：某数的3倍，减去0.1，差是0.38，求这个数．(用方程解)
<gadget id="calculator">0.38 + 0.1</gadget>
<output>0.48</output>

<gadget id="calculator">0.48 / 3</gadget>
<output>0.16</output>

<result>0.16</result>