Tolong jawab no 2 dengan caranya yah

2).800 m + 40 hm + 6.000 dam =........ dam
= 800 m x 100 =80.000 dam
= 40 hm x 10 = 400 dam
= 6.000 dam = 6.000 dam
= 80.000
6.000
400
______ +
86.400
= 800 m + 40 hm + 6.000 dam = 86.400 dam