I'm learning about Subnets. Please help me with an answer.

I want to get broadcast address of 26.220.145.227 /19 . I know that answer is 26.220.159.255 .

From what courses I read until now I know how to calculate masks and host for /32 - 24 , using formula: Mask nr. - 32 = x results that 2^x = hosts nr.

I also read a tutorial about transforming all in bits 10111001, but I want to know if is there a method to get that answer (26.220.159.255) using formula that I already use.

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Thank you.