80 562 dam + 689 dam - 270 dam = 81 251 dam - 270 dam = 80 981 dam
90 100 m + 15 000 m + 4 907 m = 110 007 m
490 568 mm - 72 300 mm + 98 000 mm = 418 268 mm + 98 000 mm =
= 516 268 mm
