I'll give you a question, please answer with step-by-step reasoning process.
Gina's snake eats one mouse every 4 weeks. How many mice will it eat in a decade?

130
First find the number of mice the snake eats each year: 52 weeks / year / 4 weeks / mouse = 13 mice / year.

Then multiply the number of mice the snake eats per year by the number of years per decade to find the number of mice it eats per decade: 13 mice / year * 10 years / decade = 130 mice / decade.

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The answer: 130