There are 4 pens, 3 pencils, and 1 ballpoint pen in the stationery box. Take any one of them. The correct expression of the following statement is P(take the pen)=how much
文具盒里装有4枝钢笔、3枝铅笔、1枝圆珠笔，从中任取一枝，下列说法表述正确的是P(取到钢笔)=多少
<gadget id="calculator">4 / 8</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>