If a is a number greater than 0, then a*(3/7) is compared with a+(3/7), how big is a+
如果a是一个大于0的数，那么a*(3/7)和a+(3/7)相比较，a+多少大
<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>

<result>3/7 = around 0.428571</result>