The product of 12 times 0.75 is 0.9 more than twice a number. What is this number?
12乘0.75的积比一个数的2倍多0.9，这个数是多少？
<gadget id="calculator">12 * 0.75</gadget>
<output>9</output>

<gadget id="calculator">9 - 0.9</gadget>
<output>8.1</output>

<gadget id="calculator">8.1 / 2</gadget>
<output>4.05</output>

<result>4.05</result>