There are 105 students in the school's calligraphy group, and girls account for 2/3 of the boys. How many boys are there? (Solve by equation and formula)
学校书法组有105人，其中女生是男生人数的(2/3)，男生有多少人？(用方程和算式两种方法解答)
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 + (2/3)</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">105 / (5/3)</gadget>
<output>63</output>

<result>63</result>