We have a 'fifty-fifty' chance of succeeding. [=we are as likely to succeed as we are to fail]
The bill for dinner came to $43, and she gave him a 'fifty'.
They divided/split the expenses 'fifty-fifty'. [='equally']
(..) Take good care of him for me. I hope I don't miss my flight, kid. Admiral, we received an intel report. We lost track of a nuclear Akula fifty nautical miles northwest of Hawaii, it could be the MUTO. Just got word of a missing Russian sub in the North Pacific. Martinez? (..)2014 Godzilla
(..) - Then what? Nature has an order, a part to restore balance. I believe he is that power. Sir, right now we're fifty miles from Hawaii. This transport will take you there. You'll catch a commercial flight back to San Francisco. I need you to brush you teeth. - No... (..)2014 Godzilla