There are 50 students in the first grade, and 5 students in the second year are three times the number in the first year. How many students are there in the second year?
一年级50人，二年比一年的人数的3倍少5人，二年有多少人？
<gadget id="calculator">50 * 3</gadget>
<output>150</output>

<gadget id="calculator">150 - 5</gadget>
<output>145</output>

<result>145</result>