Answer:
1. 9356000 
 ______
2. 2424,1153846
3. 315561834984411
Explanation:
1. ¹ ¹ ¹
 4678
 ×2000
 ______
 0000
 0000
 0000
 9356
 ________
 9356000 
2.
 ______
 567423÷234=2424,1153846
-468↓↓↓
 ___↓↓↓
 994↓↓
 - 936↓↓
 ____↓↓
 582↓
 -486↓
 ___↓
 963
 -936
 ____
 270
 -234
 _____ 
 360
 -234
 ____
 1260
 -1170
 ____
 900
 -702
 ___
 1980
 -1872
 ____
 1080
 -936
 ____
 1440
 -1404
 ____
 360
 
 (At this point the numbers behind the comma and specifically behind the first "1" are repeated endlessly. There was a specific term for this but I don't know it, because english is not my primary language. But basically: 2424,1153846153846153846....And to avoid writing endlessly repeating numbers you put a line at the top. You get the point) 
3.
 555567589
 × 567999
 __________
 5000108301
 5000108301 
 5000108301
 3888973123
 3333405534
 2777837945
 _______________
 315561834984411