Answer: 471944999999999967232
Step-by-step explanation:
(1.945)(1000000000000000000)+4.7(1020)
=1945000000000000000+4.7(1020)
=1945000000000000000+(4.7)(100000000000000000000)
=1945000000000000000+470000000000000000000
=471944999999999967232
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