Respuesta :

1 = 4
2 = -20
3 = 100
4 = -500
5 = 2500
6 = - 12,500
7 = 62, 500
8 = - 312, 500
9 = 1,562,500

Hope this helped☺☺
4, -20, 100, -500, 2500, -12500, 62500, -312500, 1562500.
1,562,500 is your answer. 
I hope this helps!
(All the numbers were multiplied by -5 to get the answer.)

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