(4+57+4+78)= 143
309?
4+78=82-7=75
57.
If I understood you correctly you meant (78*57) - 89? The answer will be 4,357.
78 - 21 = 57
57
-6
6 + 4 + 3 + 4 + 4 + 5 + 4 + 6 + 5 + 4 + 8 + 4 = 57
57 + 57 + 38 + 38 = 190
78+78-:(85)/(78)+7,879=1405
78 + 89 + 167 + 897 + 78 = 1309
1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12 = 78