100 + 100 + 100 + 10 + 1
C C C X I
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311 = CCCXI
300 = ccc 10 = x 1 = i 311 = cccxi
1/311 The reciprocal of 3/11 is 11/3
63,000,000 / 311,000,000 X 100 Cance; down by '1 million'. 63/311 X 100 = 6300 / 311 = 20.2572....%
311 is prime. Its only factors are one and itself.