Subtraction of fractions:
4_ 1/4 - 2_ 5/8
1 _ 5/8
3_ 1/3 divided by 5/6
4
3/39 * 5
5/13
5*2 + 10+1 * 5^2 =
45
2.5 + 3.5 × 0.01
2.535
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