Fifth grade teachers and students donated 150 books to Hope Primary School, the sixth grade donated more books than the fifth grade (2/15), the number is regarded as the unit "1", the books donated by the sixth grade are equivalent to the fifth grade ((()) /(())).
五年级师生向希望小学捐书150本，六年级比五年级多捐(2/15)，是把多少看作单位"1"，六年级捐的书相当于五年级的((())/(()))．
<gadget id="calculator">2 / 15</gadget>
<output>2/15 = around 0.133333</output>

<gadget id="calculator">1 + (2/15)</gadget>
<output>17/15 = around 1.133333</output>

<result>17/15 = around 1.133333</result>