[数值计算] [已解决]求助批处理求出斐波那契数列的前项除以后项的值

@echo off
set firstfib=100000000000000000000000000
set secondfib=100000000000000000000000000
set ans=
:conclusion
set /a secondfib=secondfib+firstfib
set /a ans=firstfib/secondfib
echo %ans%
goto :tmp
:tmp
set /a firstfib=firstfib+secondfib
set /a ans=secondfib/firstfib
echo %ans%
goto :conclusion
pause>nul
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<# :
@Powershell "& {[ScriptBlock]::Create((gc '%~f0' -raw)).Invoke()}" & pause & goto :eof
#>
function fib($num){
    if($num -eq 1){
        return 1;
        }
    if($num -eq 0){
        return 1;
        }
    else{
        return (fib ($num-2)) + (fib ($num-1));
    }
}
for($a=0; $a -le 20;$a++){
    (fib($a)) / (fib($a+1))
}
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fib=lambda num:1 if num <= 1 else fib(num-2)+fib(num-1)
[print(fib(i)/fib(i+1)) for i in range(20)]
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fib=[1,1]
for i in range(200):
    fib.append(fib[i+1]+fib[i])
    print(f"{i}: {fib[i]} / {fib[i+1]} = {fib[i]/fib[i+1]}")
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