6 times of a number is 1.8 more than its 3 times, find this number.
一个数的6倍比它的3倍多1.8，求这个数．
<gadget id="calculator">6 - 3</gadget>
<output>3</output>

<gadget id="calculator">1.8 / 3</gadget>
<output>0.6</output>

<result>0.6</result>