300млн×777млрд

To multiply numbers in the given format, first convert the given numbers to standard form:

300 million = 300,000,000 777 billion = 777,000,000,000

Now, multiply the numbers: 300,000,000 × 777,000,000,000 = 233,100,000,000,000,000,000

Therefore, 300 million multiplied by 777 billion equals 233,100,000,000,000,000,000.