Please capitalize where necessary: to trade away or sell items instantly you'll need: a steam guard mobile authenticator enabled on your account for at least 7 days. otherwise, to give you time to discover and stop items from leaving your account if your account is compromised, items will be held by steam for up to 15 days.
A: To trade away or sell items instantly you'll need: a Steam Guard Mobile Authenticator enabled on your account for at least 7 days. Otherwise, to give you time to discover and stop items from leaving your account if your account is compromised, items will be held by Steam for up to 15 days.

Please capitalize where necessary: their table before them is for a snare, and for a recompence -- for a trap. 23
A: Their table before them is for a snare, And for a recompence -- for a trap. 23

Please capitalize where necessary: wait till scanning process completes and choose the files that you want to retrieve
A: Wait till scanning process completes and choose the files that you want to retrieve

Please capitalize where necessary: five papers appeared in 1940, one of them a major article over 30 pages in length in the american journal of mathematics with the title infinite product measures and infinite convolutions.
A:
Five papers appeared in 1940, one of them a major article over 30 pages in length in the American Journal of Mathematics with the title Infinite product measures and infinite convolutions.