What would you do with a million in cash?

The book I started reading now is called Millions and it's about these two brothers who find a huge bag filled with a million in British pounds, and become rich. But the thing is, they only have a few days to spend it because the money is in British pounds and they will soon get rid of the British pound and switch to Euros.
     The main character in this book is named Damian and his brother, Anthony. Damian is a very weird and interesting character. For instance, the thing he keeps on talking about throughout the whole book is about saints.  
Yes saints, saints and patrons of almost anything you can imagine, and he knows all their full names, what they did to be considered saints, and when they died. So this makes him pretty religious too and he thinks the money came from God.
        And since he likes saints so much he wants to be like one. He wants to donate most of the money they found to charity and people who need it more and stuff. I think that's what makes him inspiring, to do good deeds to the world. But his brother is kind of the opposite. He doesn't care much about the poor and doesn't really agree to all this donating stuff, he just wants to buy things for himself. What he also does is that since their mom died, whenever he wants something or gets in trouble for something he just mentions her death and pretends to cry. I's like doesn't care about her death or something, but I don't want to judge because I haven't
experienced something like that, but most characters from other books don't do such a thing.
                  Another weird thing is that their dad doesn't even know about this. He did question the big duffer bag once or twice, but they just answered with a lie. He didn't even notice all the new toys they bought for themselves! Also, Damian is weird to. He has these visions of saints talking to him or something, and I don't know if the author is trying to make this book more fantasy-like or just trying to make Damian seem like some
weird kid with mental problems.
        And one last thing that makes this book a little weird. England never switched from Pounds to Euros, but
I guess he can do tat since it is a fiction book after all. But what I did notice is that England is just instantly getting rid of their pounds. The day after they switch to Euros they can't take the money in Pounds and exchange it to Euros. Most countries still allow you to exchange old money, if you still have any, to the new money.
         But overall, this book is pretty good, just a little... different.