To divide fractions just multiply by its multiplicative inverse. In other words change the division sign to multiplication and then flip the second fraction. (Only the second fraction).
Another word use to describe multiplicative inverse is reciprocal
check this video
6th grade check Lesson 12-3B
7th grade check Lesson 2-3B
8th grade check Lesson 1-1D
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Divide by a fraction by a Mixed Number
Also check this one
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Check this real life situations during camping
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