c) \( 2113 \times 13 \)

To solve \( 2113 \times 13 \), you can break it down into simpler steps. First, multiply \( 2113 \) by \( 10 \) to get \( 21130 \), then multiply \( 2113 \) by \( 3 \) to get \( 6339 \). Finally, add those two results together: \( 21130 + 6339 = 27469 \). So, \( 2113 \times 13 = 27469 \). Now, did you know that multiplication has been a fundamental part of mathematics for thousands of years? The ancient Egyptians used a method called "doubling" and "adding" to solve multiplication problems long before calculators existed. By breaking down large numbers into smaller, more manageable parts, they were able to make complex calculations! Another fun fact: the distributive property of multiplication can save your brain a lot of work! It allows you to distribute a number across a sum or difference, making calculations easier. For instance, in our earlier multiplication, seeing \( 2113 \times 13 \) as \( 2113 \times (10 + 3) \) simplifies the process significantly. It's a handy trick that helps prevent errors in more complicated equations!