应用: 计算器
任务: 打开计算器应用，切换到贷款计算，输入贷款15万，年利率3.5%
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: TYPE
type_text: 15
step_id: 5
action: CLICK
step_id: 6
action: STOP