- \(7000400-56078=6944322\);
- \(387947+453257=841204\);
- \(80370\cdot49=3938130\);
- \(10791:327=33\);
- \(9-2\frac{11}{15}=6\frac{4}{15}\);
- \(\frac{4}{15}-\frac{8}{15}=-\frac{4}{15}\);
- \(230\cdot(96+8901:43):115\cdot320=230\cdot(96+207):115\cdot320=230\cdot303:115\cdot320=606\cdot320=193920\).
Ответ: 6944322; 841204; 3938130; 33; \(6\frac{4}{15}\); \(-\frac{4}{15}\); 193920.