2(7.8*10^5)-(3.9*10^3)

2(7.8*10^5) - (3.9*10^3)
15.6*10^5 - 3.9*10^3
1560000 - 3900
1556100
1.5561 * 10^6

2(7.8*10^5)-(3.9*10^3)

2(780,000) - (3,900)

1,560,000 - 3,900 = 1,556,100

The answer is 1,556,100 or 1.5561*10^6

2*780000-3900
1560000-3900
1556100
1.5561*10^6

1.5561*10^6