Decent MK3i dive decoplanning ,

Decent MK3i dive decoplanning , When I make a deco planning, I get the dept and the gas info, but I don’t understand the Time table, for exempel a dive at 40m for 20min give me totale time of 4739 what? Sec or min????

It is also not very clear how many decostops I have to made,

for exempel I have to make (for the same dive) a deco stop at 3M 9min, the Watch is geven 738???? At 3M. I don’t understand that

Is the input wrong or is theire something I have to change in the settings