[tex] \tt \green{question}[/tex]
[tex] \tt \red{solution}[/tex]
[tex]5 \times 10 {}^{13} [/tex]
[tex] \sf \blue{ - - - - - - - - - - - - - - - - - - - - }[/tex]
[tex] \tt \blue{answer}[/tex]
[tex]500000000000000[/tex]