1. Stating the problem: We need to find the product of each double-digit multiplication problem given. 2. Formula used: For multiplication of two numbers $a$ and $b$, the product is $a \times b$. 3. Calculations: - $26 \times 62 = 1612$ - $98 \times 80 = 7840$ - $19 \times 27 = 513$ - $66 \times 24 = 1584$ - $76 \times 27 = 2052$ - $86 \times 21 = 1806$ - $63 \times 30 = 1890$ - $79 \times 80 = 6320$ - $34 \times 70 = 2380$ - $53 \times 34 = 1802$ - $18 \times 27 = 486$ - $31 \times 14 = 434$ - $22 \times 23 = 506$ - $78 \times 24 = 1872$ - $93 \times 39 = 3627$ - $62 \times 74 = 4588$ - $73 \times 11 = 803$ - $25 \times 45 = 1125$ - $86 \times 21 = 1806$ - $70 \times 34 = 2380$ Each multiplication was done by straightforward calculation. Final answers: 26 × 62 = 1612 98 × 80 = 7840 19 × 27 = 513 66 × 24 = 1584 76 × 27 = 2052 86 × 21 = 1806 63 × 30 = 1890 79 × 80 = 6320 34 × 70 = 2380 53 × 34 = 1802 18 × 27 = 486 31 × 14 = 434 22 × 23 = 506 78 × 24 = 1872 93 × 39 = 3627 62 × 74 = 4588 73 × 11 = 803 25 × 45 = 1125 86 × 21 = 1806 70 × 34 = 2380