Yucai Primary School organized 100 students to plant trees. Male students planted 3 trees on average, female students planted 2 trees on average, and everyone planted 2.6 trees on average. How many male students are there?
育才小学组织100名学生植树，男同学平均每人植3棵，女同学平均每人植2棵，所有人平均每人植2.6棵，则男同学有多少人．
<gadget id="calculator">260 - 200 - 200</gadget>
<output>-140</output>

<gadget id="calculator">200 + (-140)</gadget>
<output>60</output>

<gadget id="calculator">3 - 2</gadget>
<output>1</output>

<gadget id="calculator">60 / 1</gadget>
<output>60</output>

<result>60</result>