Answer:
1020000
Step-by-step explanation:
Step 1 : Use BODMAS (Bracket Open Divide Multiply Add Subtract)
Step 2 : Take the common term
7.8*10^5+2.4*10^5
10^5(7.8 + 2.4)
Step 3 : Solve
100,000(10.2)
=1020000
!!
1.02 × 106
