Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> b3d41e7445dec3961e1492142a0b04b36f97c0af5cbb7c064072400d0c44b5ab:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^