Xiaoming's phone bill this month has increased (1/15) compared to last month. How much is this month's phone bill compared to last month?
小明家本月电话费比上月增加了(1/15)，本月电话费是上月的多少．
<gadget id="calculator">1 / 15</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">1 + (1/15)</gadget>
<output>16/15 = around 1.066667</output>

<result>16/15 = around 1.066667</result>