Respuesta :

2187 / 3 = 729
729 / 3 = 243
243 / 3 = 81
81 / 3 = 27
27 / 3 = 9
9 / 3 = 3
3/3 = 1

so
3 x 3 x 3 x 3 x 3 x 3 x 3 = 2187 ( 7 times)
or
3^7 = 2187