55 ÷ 990 = 55/990 = 1/18 = 0.0555... ≈ 0.056
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If English is not your first language (but likely Spanish is), then you may have meant:
990 ÷ 55 = 18
The LCM is 990.
It is: 55/990 = 1/18
90
198
22
330
45
990
18 x 55 = 990
The result of 110565 times 99 divided by 990 is 11115.
990
990