a) $$510173 - 209 \cdot (8112 : 39 + 196) - 102720:96 \cdot 207$$
- $$8112 : 39 = 208$$
- $$208 + 196 = 404$$
- $$209 \cdot 404 = 84436$$
- $$102720 : 96 = 1070$$
- $$1070 \cdot 207 = 221490$$
- $$510173 - 84436 = 425737$$
- $$425737 - 221490 = 204247$$
б) $$48880: (3006 \cdot 702 - 2110024) + 2695 + 604 \cdot 3980: 10$$
- $$3006 \cdot 702 = 2110212$$
- $$2110212 - 2110024 = 188$$
- $$48880 : 188 = 260$$
- $$3980 : 10 = 398$$
- $$604 \cdot 398 = 240392$$
- $$260 + 2695 = 2955$$
- $$2955 + 240392 = 243347$$
Ответ: