have to/must spend (time or money..) in this sentence means you must spend a lot of time to ....

Thank you very much, everyone!

you must spend (more time to do sth) 即使........也.....even if 得= must /have to 花= spend , here

“也得花”=“也需要耗费”=“Need to consume”

It means "cost" 花in cinese not only means fiore.It can also be used as a verb.Like :我花钱means I spend money.我花时间means I spend time. Auguring per tuo stuio in Cinese.(I hope I'm right in this setence.)