echo {4*4/12/12}
echo {30000/(4*4/12/12)}
echo {5500*90}
echo {270000/5000}
echo {400000*(60*4 + 120)}
echo {(60*4 + 120)}
echo {300000*360*5}
echo {300000*360*5/1e6}
echo {300000*360*5/3e7}
echo {(60*8 + 120)}
echo {300000*600*5/3e7}
echo {(60*12 + 120)}
echo {300000*840*5/3e7}
