Beat the butter until soft in a large cup (beating by hand or with a machine might beat it.) Then fill with a mixture of butter, sugar, and beat until the mixture together.
Beat butter in large bowl until fluffy. (Either by hand or with a mixer beat it), then add the sugar and beat until the mixture is well mixed with butter.
Beat the butter in large bowl until soft. (may hit by hand or with a mixer). Then, add sugar and mix together with the butter until the mixture is mixed.