With math homework show work

all of the questions

At least do number 3 so I can help with the rest. That ok with you?

9423 
three goes into nine three times 
which gives you zero then bring the four down 
three goes into four one time then subtract four from three then that gives you one  than bring the two down which  makes twelve and three goes into twelve four times and 12 subtracted from twelve gives zero and then bring the three down and three goes into three 1 time so that equal zero 
so in total the whole answer should be 3141