1 1 /3 X 1.80

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To solve the multiplication problem of 1 1/3 x 1.80, we can first convert the mixed number 1 1/3 into an improper fraction.

To convert a mixed number to an improper fraction, we multiply the whole number part (1) by the denominator of the fraction (3) and then add the numerator (1). This gives us 4/3.

So now, we have 4/3 x 1.80. To multiply fractions, you multiply the numerators (top numbers) together and the denominators (bottom numbers) together.

Calculating this, we have (4/3) x (1.80) = (4 x 1) / (3 x 1) x 1.80 = 4/3 x 1.80 = 7.20/3.

To simplify this fraction, we need to find a common factor between the numerator and the denominator. In this case, the number 3 is a common factor.

Dividing both the numerator and denominator by 3, we get 7.20/3 = 2.40.

Therefore, 1 1/3 x 1.80 is equal to 2.40.