You can't calculate meters into acres or acres into meters because they are incompatible measurements. If it was meters squared, that might be a bit different.
About 4.84 acres.
90 * 140 acres = 50,990 390.9 m2
140' x 340' = about 1.1 acres.
400 meters by 200 meters is about 19.8 acres.
1 acre = 43560 square feet Answer = 50 x 140 = 7000 square feet = 7000/43560 acres = 0.1607 acres
20,000 square meters is 4.94 acres.
98 feet x 140 feet is 0.314968 acres.
(140 acres)/(640 acre per section) = 7/32 section or 0.21875
800 square meters = about 0.2 acres. (0.197684305 acres)
3,600 square meters = about 0.9 acres. ( 0.889579373 acres)
595 square meters = about 0.15 acres. (0.147027702 acres)
0.11 acres is 445.2 square meters.
Answer: 395 acres = 1,598,508.286 square meters.