数字键盘练习

🍅 Pomodoro Timer 25min focus + 5min break timer ⏱ Countdown Timer Online countdown timer tool 🌍 World Clock Multi-city real-time clock display 💰 Meeting Cost Calculator Real-time meeting cost tracker 💵 Hourly Rate Converter Convert annual/monthly/hourly rate 📅 Workday Counter Count workdays between dates ⏰ Overtime Pay Calculator Calculate overtime pay by hours 📖 Reading Time Estimator Estimate reading time by word count ⌨ Typing Speed Test Test typing speed in WPM 📋 Project Deadline Calculator Calculate deadline from workdays 🌐 Timezone Meeting Planner Find best time across timezones 💼 Salary Comparison Calc Compare salary across time units