Final answer:
To multiply 345 7 by 64 7, use the standard multiplication method by lining up the numbers vertically and multiplying each digit, then add the results. thus the result is 22152 49.
Step-by-step explanation:
To multiply 345 7 by 64 7, you can use the standard multiplication method:
- Write the numbers vertically, lining up the digits according to place value.
- Start multiplying from the rightmost digit of the bottom number, multiplying it by each digit of the top number and writing the results below.
- Add up the results column-wise, carrying over any remainders.
In this case, the result is 22152 49.