7, 000. There is also these helpful devices called a 'calculator' and the 'internet' maybe use them some time :)
1
2.8571
0.05
1.1667
0.0103
1 billion = 1,000 million 2 billion = 2,000 million . . 7 billion = 7,000 million
1
7
1.1667
1.4
1 billion = 10^9 1% of a billion is 10^7 1% of 41 billion is 41X10^7 = 410,000,000 = 410 million
0.3