My lot is worth 21,762 simoleons and only my sim lives there. The money in reserve is 35,621 simoleons. Despite those numbers, I just got a bill worth 12,149 simoleons, which makes no sense considering the value of the lot and the fact that the last bill I had got was worth around 1000 simoleons. Is this supposed to happen? If not, can someone tell me how I avoid that?