The school organized donations to the Hope Project. The first grade students donated a total of 356 yuan, the second grade students donated a total of 395 yuan, and the third grade students donated 145 yuan less than the total donations of the first and second grades. How much did the third graders donate?
学校组织向希望工程捐款，一年级学生共捐了356元，二年级学生共捐了395元，三年级学生捐的款比一、二年级捐的总数少145元．三年级学生捐了多少元？
<gadget id="calculator">751 - 145</gadget>
<output>606</output>

<result>606</result>