how do u divide 14.5/34.5?

you do 145/345 right?

Yes, but be sure you get the decimal point in the right place in the answer.

when i use calculator i get 0.42 but when i calculate using pencil and paer i get .23 what am i doing wrong?

002.3

145/345
290
___________
550
455
__________
95

0.42 is right

you are dividing backwards:

345/145 = 2.3

I don't understand

when i divide 145/345 i get 2.3

NO, YOU DO NOT

When you divide 345 by 145 you get 2.3

You are doing it backwards! By hand, you need to start out with

345)125

345 is the divisor, not the dividend!