183. Решение:
1) 34 * (-4) = -136
2) -7,2 * (-7) = 50,4
3) -3\frac{1}{5} * 1\frac{2}{3} = -\frac{16}{5} * \frac{5}{3} = -\frac{16 * 5}{5 * 3} = -\frac{16}{3} = -5\frac{1}{3}
4) -3\frac{5}{9} * (-1\frac{1}{8}) = -\frac{32}{9} * (-\frac{9}{8}) = \frac{32 * 9}{9 * 8} = \frac{32}{8} = 4