= 12345 x ( 3 + 2 + 4 )
= 12345 x 10
=123450
A = 12345 x 3 + 12345 x 2 + 12345 + 12345 x 4
A = 12345 x 3 + 12345 x 2 + 12345 x 1 + 12345 x 4
A = 12345 x (3 + 2 + 1 + 4)
A = 12345 x 10
A = 123450
12345 x 3 + 12345 x 2 + 12345 x1 +12345 x 4
12345 x ( 3+ 2 + 1 + 4 )
12345 x 10
123450