There are 60 students who have reached the excellent standard in the oral English test of the third year of junior high school, accounting for 30% of the total number of students. In the fan-shaped statistical chart, 50% of the students are good grades. How many people are good grades?
某校初三英语口试达到优秀标准的有60人占总人数的30%，在扇形统计图中，表示良好等级的占50%，良好等级的有多少人．
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">60 / (3/10)</gadget>
<output>200</output>

<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">200 * (1/2)</gadget>
<output>100</output>

<result>100</result>