高精度除法（a/b，a为高精度，b为长整型）

const maxn=20;
      jz=10;
var s:string;
    array [1..255] of integer;
    longinteger;
    i,j:integer;
    c:longint;
    k:integer;
    temp:longint;
begin
write(\'Please input the larger number a:\');
readln(s);
long=length(s);
for i:=1 to longo do
  o:=ord(s[longo-i+1])-ord(\'0\');
write(\'Please input the smaller number b:\');
readln(c);
temp:=o[longo];
k:=temp div c;
temp:=temp mod c;
i:=longo;
while k=0 do
  begin
   if i>1 then temp:=temp*jz+o[i-1] else temp:=temp*jz;
   k:=temp div c;
   temp:=temp mod c;
   dec(i);
  end;
if (i=0) then write(\'0.\');
write(k);
j:=1;
while ((j<maxn) or (i>=1)) do
  begin
   if i>1 then temp:=temp*jz+o[i-1] else temp:=temp*jz;
   if (i=1) then write(\'.\');
   write(temp div c);
   temp:=temp mod c;
   dec(i);
   inc(j);
   if (temp=0) and (i<=1) then break
  end;
writeln;
end.