



 
Hi Mari, One million is 1,000,000 and 1 billion is 1,000,000,000 and hence as a fraction of the population of the world his subscribers are \[\frac{91 \times 1,000,000}{7.53 \times 1,000,000,000}\] which is \[\frac{91,000,000}{7,530,000,000} = \frac{91}{7,530}.\] Write this fraction as a decimal and then multiply by 100 to express it as a percentage. Penny 



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