140. An example of multiplication. One morning at breakfast, the Crackhams were discussing high matters, when suddenly George asked his sister Dora to quickly multiply

$$
1 \times 2 \times 3 \times 4 \times 5 \times 6 \times 7 \times 8 \times 9 \times 0
$$

How long will it take the reader to find this product?
140. George's question did not catch Dora off guard. She immediately gave the correct answer: 0.