You can put this solution on YOUR website! A brick weights 777 grams plus half a brick
Therefore 1 1/2 bricks weigh 777g
3/2 bricks weigh 777g
So 1 brick weighs (777 x 2)/3
1 brick weighs 518g
Proof:
1 brick weighs 518g
1/2 brick weighs 259g
Total weight 777g
Hope this helps
:-)