Answer:1.25Step-by-step explanation:First, move both decimal point twice to the right. Si 6.40 magiging 640, si 8, magiging 800 since lalagyan natin siya ng 0 pag minove ung decimal. Then use long division as usual dividing, multiplying, subtracting and bringing down 0 when necessary. After, move the decimal point twice to the left this time. You have your final answer.