1. $$357 \times 48 = 17136$$
2. $$5702 \times 37 = 210974$$
3. $$351 \times 702 = 246402$$
4. $$812 \times 64 = 520 \times 60 + 520 \times 4 = 51968$$
5. $$6814 \times 820 = 5587480$$
6. $$8003 \times 231 = 1848693$$
**Результаты:**
* $$357 \times 48 = \textbf{17136}$$
* $$5702 \times 37 = \textbf{210974}$$
* $$351 \times 702 = \textbf{246402}$$
* $$812 \times 64 = \textbf{51968}$$
* $$6814 \times 820 = \textbf{5587480}$$
* $$8003 \times 231 = \textbf{1848693}$$