The two outer terms are 3.75 and x, and the two inner terms are 0.75 and 0.8, what is the value of x?
两外项分别是3.75和x，两个内项分别是0.75和0.8，则x的值是多少．
<gadget id="calculator">0.75 * 0.8</gadget>
<output>0.6</output>

<gadget id="calculator">0.6 / 3.75</gadget>
<output>0.16</output>

<result>0.16</result>