Cancel down, switch between mixed and improper, then multiply and divide — all by hand.
Fractions are friendly without a calculator if you keep two habits: always simplify at the end, and turn any mixed number into an improper fraction before you multiply or divide. Get those two right and the rest is just times tables.
Divide the top (numerator) and bottom (denominator) by the same number, again and again, until they share no common factor. Tap through it:
A mixed number has a whole part and a fraction part; an improper fraction has a top bigger than its bottom. You must be able to swap between them.
Multiply the tops together and the bottoms together — then simplify. Tap through it:
Keep the first, flip the second, change ÷ to × — “keep, flip, change”. With mixed numbers, convert first. Tap through it: