A lot; 398.10717055349725077025230508775 x 10^1038 to be exact, or about 400 followed by another 10100000000,0000000000,0000000000,0000000000 zeroes.
3 times 10 to the 8th power divided by 7 times 10 to the negative 7th power equates to: 4.28571428571
3.45 x 10^1
1.39 times 10 to the 2nd power is 139
10 to the power 3+4 ie 10 to the 7th power.
1 times 10 to the 11 power
1 with 26 0's 1,000,000,000,000,000,000,000,000,000
It's a very large number. Without scientific notation, it's 862,300,000,000,000,000,000,000,000 .
100,000,000,000,000,000,000,000,000
10 to the 4 power times 10 to the 3 power is 10,000,000 (10 million).
1
3 times 10 to the 8th power divided by 7 times 10 to the negative 7th power equates to: 4.28571428571
3.45 x 10^1
2 times 10 to the 3rd power = 2,000
1.35 times 10 to the 19th power = 13,500,000,000,000,000,000
1.39 times 10 to the 2nd power is 139
5.1 times 10 to the power of 8 is 510,000,000
3.5 times 10 to the 9 power = 3,500,000,000