1. show form before and after submission
2. make sure all info are provided
3. collect hours of morning afternoon and evening and sum them like following example
$a = array(2, 4, 6, 8);
echo array_sum($a);
4. per hour earning 100 5. if total earning is more than 1200 RMB then apply 15% tax
6. and show the tax



Please choose your working place and times to calculate your total income
General info
Name
Age
Monday
Morning Afternoon Evening Didn't Work
Tuesday
Morning Afternoon Evening Didn't Work
Wednesday
Morning Afternoon Evening Didn't Work
Thursday
Morning Afternoon Evening Didn't Work
Friday
Morning Afternoon Evening Didn't Work