我现在只有小学和工作水平

Elementary School
2 + 2 = 4
2 x 2 = 4

Middle School
-b ± √(b² - 4ac) / (2a)

High School
∫f(t) dt = f(a) - ∫f(a) da

College
da / dM

Job
OFFICE SUPPLIES ORDER

Item Price Quantity Total
Copy paper 2.49 20 49.80
Post-It Notes 5.99 10 59.90
Stapler 7.99 5 39.95
Paper punch 11.90 15 178.50
Highlighter pen 1.99 100 99.50

TOTAL COST OF ORDER
€427.65

0.12. Semi
AVERAGE PRICE
€6.07

我现在只有小学和工作水平