Write decimals

Write in the decimal system the short and advanced form of these numbers:
a) four thousand seventy-nine
b) five hundred and one thousand six hundred and ten
c) nine million twenty-six

Correct result:

a =  4079
b =  501610
c =  9000026

Solution:

a=4⋅ 1000+7⋅ 10+9⋅ 1=4079a=4 \cdot \ 1000 + 7 \cdot \ 10 + 9 \cdot \ 1=4079
b=5⋅ 100000+1⋅ 1000+6⋅ 100+1⋅ 10=501610b=5 \cdot \ 100000 + 1 \cdot \ 1000 + 6 \cdot \ 100 + 1 \cdot \ 10=501610
c=9⋅ 1000000+2⋅ 10+6⋅ 1=9000026=9.000026⋅106c=9 \cdot \ 1000000 + 2 \cdot \ 10 + 6 \cdot \ 1=9000026=9.000026\cdot 10^{ 6 }

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