In "Donate to Support Education", the fourth grade students donated 88 yuan, and the total donations of the fifth and sixth grade students were 13 yuan less than the three times of the fourth grade students. How much does the fifth and sixth grade students donate?
在"捐资助学"中，四年级学生捐款88元，五、六年级学生捐款的总数比四年级的3倍少13元．五、六年级学生捐款多少元？
<gadget id="calculator">88 * 3</gadget>
<output>264</output>

<gadget id="calculator">264 - 13</gadget>
<output>251</output>

<result>251</result>