Ответ:30000000 + 90000 + 70 = 30090070.6000000 + 70000 + 40 = 6070040.900270 − 700000 + 21 = 200270 + 21 = 200291.9600004 − 800000 = 8800004.379030 − 9000 = 370030.5200000 + 1000 + 800 + 4 = 5201804.