42-1÷(-1.6)
1 + 8 * 7 - 9
2×(.8+.3)÷2×(1.4+1.11.125)÷2
42 ÷ (-1.6)
29615/1475
2 1/3+1 5/6-x+20/3=7 1/3
represent each nbr of the nbr of line 3
10-27+12
to nth nth
3+
(1.2)^3