Track / Stage 4 / 46 of 340 #306 of 1964

What is the total sum of the numbers 1966, 1976, 1986, 1996, and 2006?

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A number or a short expression. Fractions can be typed as 3/2, and spacing doesn't matter.

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Official solution

1.【Solution】 1986 is the average of these five numbers, so the sum $=1986 \times 5=9930$.

Source: NuminaMath-1.5, licensed Apache-2.0. Statement reproduced verbatim; metadata (topic, difficulty, ordering) added by this project.