5. $\underbrace{11 \cdots 1}_{100 \uparrow 1}+\underbrace{22 \cdots 2}_{50 \uparrow 2}+\underbrace{44 \cdots 4}_{25 \uparrow 4}+2010$ The sum of the digits of the calculation result is $\qquad$
Answer: 303