应用: 计算器
任务: 开启计算器，进入单位换算功能，选择面积选项，输入“75m²”
操作步骤:
step_id: 0
action: CLICK
step_id: 1
action: CLICK
step_id: 2
action: CLICK
step_id: 3
action: CLICK
step_id: 4
action: CLICK
step_id: 5
action: STOP