Between both the Tropic of Cancer and the Tropic of Capricorn, there are 5 squares with 75 degrees each, and 6 squares with 75 degrees between the Tropic of Cancer and the equator.

What does it mean?<br><br>75\*5=375 <br><br>75\*6=450 <br><br>75\*6+75\*5=450+375=825 <br><br>825+6+5=825+11=836 <br><br>836\*2=1672 <br><br>Between the Tropic of Capricorn and the Tropic of Cancer, the 7 squares with 75 degrees each represent 75 squares, and the other 6 squares, located between Tropic of Cancer and the equator, represent, in total, 75\*6, or 450 squares. Together, the total number of squares is 825, and 7+6, which is 13, subtracted from, or subtracts 75\*13, or 975, from 75\*7+75\*6. Together, the squares 75\*6 and 75\*7 have 975 squares, if you subtract 13 from 7+6. Then, 975 minus 975 is 0.