Brain Game: Math Square #84
To some, 84 is a "neat" number because it's evenly divisible by 1, 2, 3, 4, 6, and 7. To others, 84 is the meaning of life (twice). Here at the mentalfloss.com Brain Game, 84 is just the number we've applied to today's Monday Math Square. Good luck!
The nine white squares inside the main red grid should be filled with the digits 1 through 9. Each digit should appear only once in this main grid (the red square). Place the digits 1 through 9 in their correct spots so that the mathematical equations work both across and down.