HI PLEASE HELP ON QUESTION ASAP! I AM GIVING 41PTS! I REALLY NEED HELP ON QUESTION AND I DONT UNDERSTAND THE ANSWER ON MATHSWATCH . IF UR ANSWER IS CORRECT I WILL RATE YOU FIVE STARS GIVE YOU A THANKS AD MAYBE EVEN BRAINLIEST! ANY SILLY ANSWERS WILL BE DELETED/REPORTED (sorry for caps!!)

here are the ingredients needed to make 6 biscuits.
ingredients for 6 biscuits.
25g sugar
100g butter
100g flour
5ml milk.

Richard has 250g sugar
900g butter
1kg of butter
30ml milk .

work out the greatest number of biscuits richard can make.