The number of girls in the sixth grade is 140, and the number of boys is 15% less than that of girls. How many students are there in the sixth grade?
六年级的女生人数是140人，男生人数比女生少15%，六年级一共有学生多少人？
<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">1 - (3/20)</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">140 * (17/20)</gadget>
<output>119</output>

<gadget id="calculator">140 + 119</gadget>
<output>259</output>

<result>259</result>