Well, we are going to have to convert all units to ft. 631 meters is 2070.209974 ft. 707 yards is 2121 ft. and 110 ft is already in feet. If you multiply these together you get:
2070.209974 * 2121 * 110 = 483000689 ft. OR:
161000229.667 yards
Hope that was helpful. You just have to convert everything into feet and multiply everything together. That one was pretty hard though :(
