My wife would be mad if I got a girlfriend.

*this year.

In a year implies a year-long time frame. Or maybe some just haven't been showering over e past 365 days.

If you have an ant, and two groups of three ants. You have seven ants. 1+2x3

If you add the single ant to the group (1+2) then you have effectively given the single ant the equivalency of three ants, making nine ants total. (1+2) x 3