You do not need a decimal point to write 34 thousand, but, if you must "34000." is one way.
34.00
4*34 = 136
16,000
That is 0.34
0.34
To convert 3.4% to a decimal, divide by 100: 3.4% ÷ 100 = 0.034
8 3/4 as a decimal is 8.75.
24,003,034
$34,000,000,000,000.00
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34,000,219,416
5.034