A number is 0.7 smaller than 1.6 times 4.5, what is the number?
一个数比4.5的1.6倍小0.7，求这个数是多少？
<gadget id="calculator">4.5 * 1.6</gadget>
<output>7.2</output>

<gadget id="calculator">7.2 - 0.7</gadget>
<output>6.5</output>

<result>6.5</result>