There are infinitely many possible answers. Here are some possibilities:
1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1
15.9 + 0.1
15.99 + 0.01
100 + (-84)
The two numbers that multiply to -48 and add up to 13 are 16 and -3. When you multiply them, (16 \times -3 = -48), and when you add them, (16 + (-3) = 13).
16 and 64
The numbers are 15, 16 and 17.
54
16, 25
30
The two numbers that multiply to -48 and add up to 13 are 16 and -3. When you multiply them, (16 \times -3 = -48), and when you add them, (16 + (-3) = 13).
16 and 64
The numbers are 15, 16 and 17.
54
16, 25
That's an infinite list.
16
2 and 8
29
288
If you mean to -720 then the numbers are 36 and -20