0.19*2.5=0.475, 0.19 and 2.5 are multiplied by 2 at the same time, what is the product
0.19*2.5=0.475，0.19和2.5同时乘2，积是多少
<gadget id="calculator">2 * 2 * 0.475</gadget>
<output>1.9</output>

<result>1.9</result>