Let's calculate: 611 + 613 6×13 + 6×1111×13 ℹ6×13 = 78‖6×11 = 66‖11×13 = 143 78 + 66143 ℹ78 + 66 = 144 ▶Result: 144143 The approximate value of: 144143 equals: ▷ ≈ 1.0070