Решение:
1) \(\begin{array}{@{}c@{\,}c@{}c@{}c@{}c@{}c} & & 2 & 6 & 4 & 7 & 5 \\ & & & \times & & 6 \\ \cline{3-7} & 1 & 5 & 8 & 8 & 5 & 0 \\ \end{array}\)
26475 * 6 = 158850
2) \(\begin{array}{@{}c@{\,}c@{}c@{}c@{}c@{}c} & & 4 & 2 & 4 & 8 & 7 \\ & & & \times & & 2 \\ \cline{3-7} & & 8 & 4 & 9 & 7 & 4 \\ \end{array}\)
42487 * 2 = 84974
3) \(\begin{array}{@{}c@{\,}c@{}c@{}c@{}c@{}c} & & 6 & 7 & 5 & 0 & 9 \\ & & & \times & & 8 \\ \cline{3-7} & 5 & 4 & 0 & 0 & 7 & 2 \\ \end{array}\)
67509 * 8 = 540072