What is the following numbers in ascending order

19/50
1.23 × 10*5
0.3
52%
1/2
These in descending order
0.762
3.2×10×-4
79/100
0.812
80%

write all in the same format, including the decimal point

and use ^ for powers, not * and ×
For example,
3.2x10^-4 = 0.00032
79/100 = 0.79
do the others, line up the decimal points, and it should be easier.