Think of the 7 as if it's a fraction (over one)
7 9
_ X 3 _ =
1 14
then we make it all a fraction so (14 × 3)+9 all over 14 which then = 51 over 14
7 51 51 1
__ × __ = __ = 25 _ or in decimal form 25.5
1 14 2 2
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