The next day, a team of Meteorologists went to evaluate the damage. They needed to classify this storm according to the Enhanced Fujita Scale:

F0 – F1 Weak
F2 – F3 Strong
F4 – F5 Violent

This scale uses damage from the storm to estimate wind speeds. From 1950 to 1994, the population of storms was classified as follows:

Weak 74%
Strong 25%
Violent 1%

So, assume that this distribution holds for the tornadoes that we see in 2009. We have some wild weather and see an all-time high of 632 tornadoes in the month of May 2009 (exceeding the current record of 543 from May of 2003). What is the expected number of tornadoes that are not violent?

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