Answer is `452`

49-33 = 123 {4*3=12 & 9/3=3} so, 123.

78-32 = 214 {7*3=21 & 8/2=4} so, 214.

94-72 = 632 {7*7=63 & 4/2=2} so, 632.

**96-53 = 452 {9*5=45 & 6/3=2} so, 452.**

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Challenge: If 49-33 = 123, 78 - 32 = 214, 94 - 72 = 632 then 96 - 53 = ??

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