There are 257 students in the sixth grade of Chengqi Hongjun Primary School this year, 47 more than twice the number of last year. How many people were there in the sixth grade last year?
承启红军小学六年级今年有学生257人，比去年的2倍多47人．去年六年级有多少人？
<gadget id="calculator">257 - 47</gadget>
<output>210</output>

<gadget id="calculator">210 / 2</gadget>
<output>105</output>

<result>105</result>