Answer:

Convert the decimals to fractions:
12.2 = 61/5
2.42 = 121/50
Multiply by the reciprocal:
61 50
--- x ---
5 121
Cross simplify any numbers that can be simplified:
61 x 10 610 5
--- --- = ------ = 5 ---
1 121 121 121
5 5/121 as a decimal is : 5.04
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