People are confused as to how to sit shiva and how to properly pay a shiva call. Because people do not know, and because talking about death makes people nervous and awkward, the shiva house often turns into a festive gathering filled with nervous chatter, instead of the proper house of mourning.
The average number of days in a month is around 30.4. With 24 hours in a day, this is an average of about 730 hours per month.
In that four year period there are always 12 months meaning that on average there are 30.4375 days per month. A week is seven days by any definition so that means, on average there are 4.348218571 weeks per month. that number is rounded slightly. you could be exact using a fraction.