sql - how to place a decimal point just before last two digit of a number -

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i have query below

select sum(total) sales

it give result 123456789 because in end data stored out decimal point. need format 1234567.89

i tried

select convert(decimal(10,2),sum(total)) sales

but give output 123456789.00

how make 1234567.89

divide 100.0:

select convert(decimal(10,2), sum(total) / 100.0) sales

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