Page Number: 86 Question Stem: 3. 在 □ 里填上合适的数. (Translation: 3. Fill in the appropriate number in the □.) Mathematical Problems (Long Division): Problem 1: Divisor: 3 Quotient area above dividend: blank box (5) Dividend area: 3 8 7 Multiplication result below dividend: blank box (7) blank box (5) Subtraction result: 3 Problem 2: Divisor: 3 Quotient area above dividend: 7 1 Dividend area: 2 3 2 Multiplication result below dividend: 2 blank box (1) Subtraction result: 2 Problem 3: Divisor: 8 Quotient area above dividend: 4 Dividend area: 3 5 blank box (2) Multiplication result below dividend: 3 2 Subtraction result: 3 blank box (2) ×