186. Вычислить: 7961 * 84, 4524 * 56, 17356 * 23, 23815 * 16, 16440 : 60 * 40 + 8888, 15260 : 70 * 60 - 7777

1. $$7961 \cdot 84 = 668724$$ 2. $$4524 \cdot 56 = 253344$$ 3. $$17356 \cdot 23 = 399188$$ 4. $$23815 \cdot 16 = 381040$$ 5. $$16440 : 60 \cdot 40 + 8888 = 274 \cdot 40 + 8888 = 10960 + 8888 = 19848$$ 6. $$15260 : 70 \cdot 60 - 7777 = 218 \cdot 60 - 7777 = 13080 - 7777 = 5303$$