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It is required to know what part of a pound 7/9 of a farthing is?
To reduce this, you must make it a Com∣pound Fraction, by considering that 1 far∣thing is ¼ of a penny, a penny is the 1/12 of a shilling, and a shilling the 1/20 of a pound, therefore 7/9 of a farthing is 7/9 of ¼ of 1/12 of 1/20, which by the 6th hereof, having already made a Compound Fraction of it, you may bring it to 7/8640 of a pound as was re∣quired.
To reduce Fractions of a greater Deno∣mination into a lesser; you must multiply the given Numerator by the parts contain∣ed in the several denominations between the denomination your Fraction is of, and the denomination you would reduce it to, then place the Product over your given De∣nominator.