IF 1 + 1 = 5 , 2 + 2 = 20 , 3 + 3 = 45 Then 4 + 4 = ?

Question

IF 1 + 2 + 3 = 18
2 + 3 + 4 = 27
3 + 4 + 5 = 36
4 + 5 + 6 = 45
THEN: 5 + 6 + 7 = ??

Answer 1

Answer is 80

1 + 1 = 5 (5*1*1 = 5)
2 + 2 =20 (5*2*2 =20)
3 + 3 =45 (5*3*3=45)
4 + 4 =80 (5*4*4 = 80)