50x100x1x25x4x2x5x20

=(50x2)x(100x1)x(25x4)x(20x5)

=  100   x   100    x   100  x  100

=     10000           x      10000

=      100000000.

(50x2)x(100x1)x(20x5)x(25x4)

=100x100x100x100

=100⁴

50 x 100 x 1 x 25 x 4 x 2 x 5 x 20

= (50 x 2) x 100 x (25 x 4) x (5 x 20)

= 100 x 100 x 100 x 100

= (10²)⁴ = 10⁸