Misschien weet ucarsina meer over wat er met die ' black drops ' is gebeurd <| sep |> I don ' t see the problem with a recount . Trump won , you can ' t change that . <| sep |> ok , most people tip 15 %, but I tip 20 % because I know the crap servers have to put up with and I hope it negates people that don ' t tip . To find 20 % of 34 . 65 move the decimal over to the left 1 spot . that is 10 %. So $ 34 . 65 turns into $ 3 . 465 . for sanity reasons , I would round that up to $ 3 . 50 . Now multiply by 2 to get 20 %. or add 3 . 50 3 . 50 to get $ 7 . So you would leave an $ 7 tip on top of your $ 34 . 65 . Another example $ 564 . 6610 % 56 . 466 round up to $ 56 . 50 then times 2 $ 113 if you have a calculator and you could take 564 . 66 x . 20 112 . 932 or round up to $ 113 . You can also do 564 . 66 x 1 . 2 to get the TOTAL amount you would leave 677 . 592 or round up to 678 .