Please help write these in Arabic numerals

21   50   71   100

30   51   80   101

31   60   81   200

40   61   90   201

41   70   91   300

301  501  701  901

400  600  800  1000

401  601  801  1001

500  700  900  2000

according to the college board, the average cost of tuition and fees for the 2017–2018 school year was $34,740 at private colleges, $9,970 for state residents at public colleges, and $25,620 for out-of-state residents attending public universities.